GC

Fields
Modifier and Type	Field and Description
`(package private) static int`	`BACKGROUND`
`(package private) static int`	`BACKGROUND_TEXT`
`(package private) static int`	`BRUSH`
`(package private) GCData`	`data`
`(package private) static int`	`DRAW`
`(package private) static int`	`DRAW_OFFSET`
`(package private) Drawable`	`drawable`
`(package private) static int`	`FILL`
`(package private) static int`	`FONT`
`(package private) static int`	`FOREGROUND`
`(package private) static int`	`FOREGROUND_TEXT`
`int`	`handle` the handle to the OS device context (Warning: This field is platform dependent) IMPORTANT: This field is not part of the SWT public API.
`(package private) static int`	`LINE_CAP`
`(package private) static float[]`	`LINE_DASH_ZERO`
`(package private) static float[]`	`LINE_DASHDOT_ZERO`
`(package private) static float[]`	`LINE_DASHDOTDOT_ZERO`
`(package private) static float[]`	`LINE_DOT_ZERO`
`(package private) static int`	`LINE_JOIN`
`(package private) static int`	`LINE_MITERLIMIT`
`(package private) static int`	`LINE_STYLE`
`(package private) static int`	`LINE_WIDTH`
`(package private) static int`	`NULL_BRUSH`
`(package private) static int`	`NULL_PEN`
`(package private) static int`	`PEN`

Constructors
Constructor and Description
`GC()` Prevents uninitialized instances from being created outside the package.
`GC(Drawable drawable)` Constructs a new instance of this class which has been configured to draw on the specified drawable.
`GC(Drawable drawable, int style)` Constructs a new instance of this class which has been configured to draw on the specified drawable.

Methods
Modifier and Type	Method and Description
`(package private) void`	`checkGC(int mask)`
`(package private) static int`	`checkStyle(int style)`
`void`	`copyArea(Image image, int x, int y)` Copies a rectangular area of the receiver at the specified position into the image, which must be of type `SWT.BITMAP`.
`void`	`copyArea(int srcX, int srcY, int width, int height, int destX, int destY)` Copies a rectangular area of the receiver at the source position onto the receiver at the destination position.
`void`	`copyArea(int srcX, int srcY, int width, int height, int destX, int destY, boolean paint)` Copies a rectangular area of the receiver at the source position onto the receiver at the destination position.
`(package private) static int`	`createGdipFont(int hDC, int hFont, int graphics, int fontCollection, int[] outFamily, int[] outFont)`
`(package private) void`	`destroy()` Disposes of the operating system resources associated with the graphics context.
`(package private) static void`	`destroyGdipBrush(int brush)`
`(package private) void`	`disposeGdip()`
`void`	`drawArc(int x, int y, int width, int height, int startAngle, int arcAngle)` Draws the outline of a circular or elliptical arc within the specified rectangular area.
`(package private) void`	`drawBitmap(Image srcImage, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY, int destWidth, int destHeight, boolean simple)`
`(package private) void`	`drawBitmap(Image srcImage, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY, int destWidth, int destHeight, boolean simple, BITMAP bm, int imgWidth, int imgHeight)`
`(package private) void`	`drawBitmapAlpha(Image srcImage, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY, int destWidth, int destHeight, boolean simple, BITMAP bm, int imgWidth, int imgHeight)`
`(package private) void`	`drawBitmapMask(Image srcImage, int srcColor, int srcMask, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY, int destWidth, int destHeight, boolean simple, int imgWidth, int imgHeight, boolean offscreen)`
`(package private) void`	`drawBitmapTransparent(Image srcImage, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY, int destWidth, int destHeight, boolean simple, BITMAP bm, int imgWidth, int imgHeight)`
`(package private) void`	`drawBitmapTransparentByClipping(int srcHdc, int maskHdc, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY, int destWidth, int destHeight, boolean simple, int imgWidth, int imgHeight)`
`void`	`drawFocus(int x, int y, int width, int height)` Draws a rectangle, based on the specified arguments, which has the appearance of the platform's focus rectangle if the platform supports such a notion, and otherwise draws a simple rectangle in the receiver's foreground color.
`(package private) void`	`drawIcon(Image srcImage, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY, int destWidth, int destHeight, boolean simple)`
`void`	`drawImage(Image image, int x, int y)` Draws the given image in the receiver at the specified coordinates.
`void`	`drawImage(Image image, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY, int destWidth, int destHeight)` Copies a rectangular area from the source image into a (potentially different sized) rectangular area in the receiver.
`(package private) void`	`drawImage(Image srcImage, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY, int destWidth, int destHeight, boolean simple)`
`void`	`drawLine(int x1, int y1, int x2, int y2)` Draws a line, using the foreground color, between the points (`x1`, `y1`) and (`x2`, `y2`).
`void`	`drawOval(int x, int y, int width, int height)` Draws the outline of an oval, using the foreground color, within the specified rectangular area.
`void`	`drawPath(Path path)` Draws the path described by the parameter.
`void`	`drawPoint(int x, int y)` Draws a pixel, using the foreground color, at the specified point (`x`, `y`).
`void`	`drawPolygon(int[] pointArray)` Draws the closed polygon which is defined by the specified array of integer coordinates, using the receiver's foreground color.
`void`	`drawPolyline(int[] pointArray)` Draws the polyline which is defined by the specified array of integer coordinates, using the receiver's foreground color.
`void`	`drawRectangle(int x, int y, int width, int height)` Draws the outline of the rectangle specified by the arguments, using the receiver's foreground color.
`void`	`drawRectangle(Rectangle rect)` Draws the outline of the specified rectangle, using the receiver's foreground color.
`void`	`drawRoundRectangle(int x, int y, int width, int height, int arcWidth, int arcHeight)` Draws the outline of the round-cornered rectangle specified by the arguments, using the receiver's foreground color.
`(package private) void`	`drawRoundRectangleGdip(int gdipGraphics, int pen, int x, int y, int width, int height, int arcWidth, int arcHeight)`
`void`	`drawString(java.lang.String string, int x, int y)` Draws the given string, using the receiver's current font and foreground color.
`void`	`drawString(java.lang.String string, int x, int y, boolean isTransparent)` Draws the given string, using the receiver's current font and foreground color.
`(package private) RectF`	`drawText(int gdipGraphics, char[] buffer, int start, int length, int x, int y, int flags, int mnemonicIndex, TEXTMETRIC lptm, boolean draw)`
`(package private) void`	`drawText(int gdipGraphics, java.lang.String string, int x, int y, int flags, Point size)`
`void`	`drawText(java.lang.String string, int x, int y)` Draws the given string, using the receiver's current font and foreground color.
`void`	`drawText(java.lang.String string, int x, int y, boolean isTransparent)` Draws the given string, using the receiver's current font and foreground color.
`void`	`drawText(java.lang.String string, int x, int y, int flags)` Draws the given string, using the receiver's current font and foreground color.
`(package private) void`	`drawTextGDIP(int gdipGraphics, java.lang.String string, int x, int y, int flags, boolean draw, Point size)`
`boolean`	`equals(java.lang.Object object)` Compares the argument to the receiver, and returns true if they represent the same object using a class specific comparison.
`void`	`fillArc(int x, int y, int width, int height, int startAngle, int arcAngle)` Fills the interior of a circular or elliptical arc within the specified rectangular area, with the receiver's background color.
`void`	`fillGradientRectangle(int x, int y, int width, int height, boolean vertical)` Fills the interior of the specified rectangle with a gradient sweeping from left to right or top to bottom progressing from the receiver's foreground color to its background color.
`void`	`fillOval(int x, int y, int width, int height)` Fills the interior of an oval, within the specified rectangular area, with the receiver's background color.
`void`	`fillPath(Path path)` Fills the path described by the parameter.
`void`	`fillPolygon(int[] pointArray)` Fills the interior of the closed polygon which is defined by the specified array of integer coordinates, using the receiver's background color.
`void`	`fillRectangle(int x, int y, int width, int height)` Fills the interior of the rectangle specified by the arguments, using the receiver's background color.
`void`	`fillRectangle(Rectangle rect)` Fills the interior of the specified rectangle, using the receiver's background color.
`void`	`fillRoundRectangle(int x, int y, int width, int height, int arcWidth, int arcHeight)` Fills the interior of the round-cornered rectangle specified by the arguments, using the receiver's background color.
`(package private) void`	`fillRoundRectangleGdip(int gdipGraphics, int brush, int x, int y, int width, int height, int arcWidth, int arcHeight)`
`(package private) void`	`flush()`
`boolean`	`getAdvanced()` Returns `true` if receiver is using the operating system's advanced graphics subsystem.
`int`	`getAdvanceWidth(char ch)` Returns the advance width of the specified character in the font which is currently selected into the receiver.
`int`	`getAlpha()` Returns the receiver's alpha value.
`int`	`getAntialias()` Returns the receiver's anti-aliasing setting value, which will be one of `SWT.DEFAULT`, `SWT.OFF` or `SWT.ON`.
`Color`	`getBackground()` Returns the background color.
`Pattern`	`getBackgroundPattern()` Returns the background pattern.
`int`	`getCharWidth(char ch)` Returns the width of the specified character in the font selected into the receiver.
`Rectangle`	`getClipping()` Returns the bounding rectangle of the receiver's clipping region.
`void`	`getClipping(Region region)` Sets the region managed by the argument to the current clipping region of the receiver.
`(package private) int`	`getCodePage()`
`(package private) int`	`getFgBrush()`
`int`	`getFillRule()` Returns the receiver's fill rule, which will be one of `SWT.FILL_EVEN_ODD` or `SWT.FILL_WINDING`.
`Font`	`getFont()` Returns the font currently being used by the receiver to draw and measure text.
`FontMetrics`	`getFontMetrics()` Returns a FontMetrics which contains information about the font currently being used by the receiver to draw and measure text.
`Color`	`getForeground()` Returns the receiver's foreground color.
`Pattern`	`getForegroundPattern()` Returns the foreground pattern.
`GCData`	`getGCData()` Returns the GCData.
`int`	`getInterpolation()` Returns the receiver's interpolation setting, which will be one of `SWT.DEFAULT`, `SWT.NONE`, `SWT.LOW` or `SWT.HIGH`.
`LineAttributes`	`getLineAttributes()` Returns the receiver's line attributes.
`int`	`getLineCap()` Returns the receiver's line cap style, which will be one of the constants `SWT.CAP_FLAT`, `SWT.CAP_ROUND`, or `SWT.CAP_SQUARE`.
`int[]`	`getLineDash()` Returns the receiver's line dash style.
`int`	`getLineJoin()` Returns the receiver's line join style, which will be one of the constants `SWT.JOIN_MITER`, `SWT.JOIN_ROUND`, or `SWT.JOIN_BEVEL`.
`int`	`getLineStyle()` Returns the receiver's line style, which will be one of the constants `SWT.LINE_SOLID`, `SWT.LINE_DASH`, `SWT.LINE_DOT`, `SWT.LINE_DASHDOT` or `SWT.LINE_DASHDOTDOT`.
`int`	`getLineWidth()` Returns the width that will be used when drawing lines for all of the figure drawing operations (that is, `drawLine`, `drawRectangle`, `drawPolyline`, and so forth.
`int`	`getStyle()` Returns the receiver's style information.
`int`	`getTextAntialias()` Returns the receiver's text drawing anti-aliasing setting value, which will be one of `SWT.DEFAULT`, `SWT.OFF` or `SWT.ON`.
`void`	`getTransform(Transform transform)` Sets the parameter to the transform that is currently being used by the receiver.
`boolean`	`getXORMode()` Returns `true` if this GC is drawing in the mode where the resulting color in the destination is the exclusive or of the color values in the source and the destination, and `false` if it is drawing in the mode where the destination color is being replaced with the source color value.
`int`	`hashCode()` Returns an integer hash code for the receiver.
`(package private) int`	`identity()`
`(package private) void`	`init(Drawable drawable, GCData data, int hDC)`
`(package private) void`	`initGdip()`
`boolean`	`isClipped()` Returns `true` if the receiver has a clipping region set into it, and `false` otherwise.
`boolean`	`isDisposed()` Returns `true` if the GC has been disposed, and `false` otherwise.
`(package private) float`	`measureSpace(int font, int format)`
`void`	`setAdvanced(boolean advanced)` Sets the receiver to always use the operating system's advanced graphics subsystem for all graphics operations if the argument is `true`.
`void`	`setAlpha(int alpha)` Sets the receiver's alpha value which must be between 0 (transparent) and 255 (opaque).
`void`	`setAntialias(int antialias)` Sets the receiver's anti-aliasing value to the parameter, which must be one of `SWT.DEFAULT`, `SWT.OFF` or `SWT.ON`.
`void`	`setBackground(Color color)` Sets the background color.
`void`	`setBackgroundPattern(Pattern pattern)` Sets the background pattern.
`(package private) void`	`setClipping(int clipRgn)`
`void`	`setClipping(int x, int y, int width, int height)` Sets the area of the receiver which can be changed by drawing operations to the rectangular area specified by the arguments.
`void`	`setClipping(Path path)` Sets the area of the receiver which can be changed by drawing operations to the path specified by the argument.
`void`	`setClipping(Rectangle rect)` Sets the area of the receiver which can be changed by drawing operations to the rectangular area specified by the argument.
`void`	`setClipping(Region region)` Sets the area of the receiver which can be changed by drawing operations to the region specified by the argument.
`void`	`setFillRule(int rule)` Sets the receiver's fill rule to the parameter, which must be one of `SWT.FILL_EVEN_ODD` or `SWT.FILL_WINDING`.
`void`	`setFont(Font font)` Sets the font which will be used by the receiver to draw and measure text to the argument.
`void`	`setForeground(Color color)` Sets the foreground color.
`void`	`setForegroundPattern(Pattern pattern)` Sets the foreground pattern.
`void`	`setInterpolation(int interpolation)` Sets the receiver's interpolation setting to the parameter, which must be one of `SWT.DEFAULT`, `SWT.NONE`, `SWT.LOW` or `SWT.HIGH`.
`void`	`setLineAttributes(LineAttributes attributes)` Sets the receiver's line attributes.
`void`	`setLineCap(int cap)` Sets the receiver's line cap style to the argument, which must be one of the constants `SWT.CAP_FLAT`, `SWT.CAP_ROUND`, or `SWT.CAP_SQUARE`.
`void`	`setLineDash(int[] dashes)` Sets the receiver's line dash style to the argument.
`void`	`setLineJoin(int join)` Sets the receiver's line join style to the argument, which must be one of the constants `SWT.JOIN_MITER`, `SWT.JOIN_ROUND`, or `SWT.JOIN_BEVEL`.
`void`	`setLineStyle(int lineStyle)` Sets the receiver's line style to the argument, which must be one of the constants `SWT.LINE_SOLID`, `SWT.LINE_DASH`, `SWT.LINE_DOT`, `SWT.LINE_DASHDOT` or `SWT.LINE_DASHDOTDOT`.
`void`	`setLineWidth(int lineWidth)` Sets the width that will be used when drawing lines for all of the figure drawing operations (that is, `drawLine`, `drawRectangle`, `drawPolyline`, and so forth.
`void`	`setTextAntialias(int antialias)` Sets the receiver's text anti-aliasing value to the parameter, which must be one of `SWT.DEFAULT`, `SWT.OFF` or `SWT.ON`.
`void`	`setTransform(Transform transform)` Sets the transform that is currently being used by the receiver.
`void`	`setXORMode(boolean xor)` Deprecated. this functionality is not supported on some platforms
`Point`	`stringExtent(java.lang.String string)` Returns the extent of the given string.
`Point`	`textExtent(java.lang.String string)` Returns the extent of the given string.
`Point`	`textExtent(java.lang.String string, int flags)` Returns the extent of the given string.
`java.lang.String`	`toString()` Returns a string containing a concise, human-readable description of the receiver.
`(package private) boolean`	`useGDIP(int hdc, char[] buffer)`
`static GC`	`win32_new(Drawable drawable, GCData data)` Invokes platform specific functionality to allocate a new graphics context.
`static GC`	`win32_new(int hDC, GCData data)` Invokes platform specific functionality to wrap a graphics context.

java.lang.Object
- org.eclipse.swt.graphics.Resource
- - org.eclipse.swt.graphics.GC

```
public final class GC
extends Resource
```
Class GC is where all of the drawing capabilities that are supported by SWT are located. Instances are used to draw on either an Image, a Control, or directly on a Display.

Styles:

LEFT_TO_RIGHT, RIGHT_TO_LEFT

The SWT drawing coordinate system is the two-dimensional space with the origin (0,0) at the top left corner of the drawing area and with (x,y) values increasing to the right and downward respectively.

The result of drawing on an image that was created with an indexed palette using a color that is not in the palette is platform specific. Some platforms will match to the nearest color while other will draw the color itself. This happens because the allocated image might use a direct palette on platforms that do not support indexed palette.

Application code must explicitly invoke the GC.dispose() method to release the operating system resources managed by each instance when those instances are no longer required. This is particularly important on Windows95 and Windows98 where the operating system has a limited number of device contexts available.

Note: Only one of LEFT_TO_RIGHT and RIGHT_TO_LEFT may be specified.

See Also:
PaintEvent, GC snippets, SWT Examples: GraphicsExample, PaintExample, Sample code and further information
- Structure Diagram

Field Summary

Fields
Modifier and Type Field and Description

(package private) static int BACKGROUND

(package private) static int BACKGROUND_TEXT

(package private) static int BRUSH

(package private) GCData data

(package private) static int DRAW

(package private) static int DRAW_OFFSET

(package private) Drawable drawable

(package private) static int FILL

(package private) static int FONT

(package private) static int FOREGROUND

(package private) static int FOREGROUND_TEXT

int handle
the handle to the OS device context (Warning: This field is platform dependent) IMPORTANT: This field is not part of the SWT public API.

(package private) static int LINE_CAP

(package private) static float[] LINE_DASH_ZERO

(package private) static float[] LINE_DASHDOT_ZERO

(package private) static float[] LINE_DASHDOTDOT_ZERO

(package private) static float[] LINE_DOT_ZERO

(package private) static int LINE_JOIN

(package private) static int LINE_MITERLIMIT

(package private) static int LINE_STYLE

(package private) static int LINE_WIDTH

(package private) static int NULL_BRUSH

(package private) static int NULL_PEN

(package private) static int PEN

Fields inherited from class org.eclipse.swt.graphics.Resource
device

Constructor Summary

Constructors
Constructor and Description

GC()
Prevents uninitialized instances from being created outside the package.

GC(Drawable drawable)
Constructs a new instance of this class which has been configured to draw on the specified drawable.

GC(Drawable drawable, int style)
Constructs a new instance of this class which has been configured to draw on the specified drawable.

Method Summary

Methods
Modifier and Type Method and Description

(package private) void checkGC(int mask)

(package private) static int checkStyle(int style)

void copyArea(Image image, int x, int y)
Copies a rectangular area of the receiver at the specified position into the image, which must be of type SWT.BITMAP.

void copyArea(int srcX, int srcY, int width, int height, int destX, int destY)
Copies a rectangular area of the receiver at the source position onto the receiver at the destination position.

void copyArea(int srcX, int srcY, int width, int height, int destX, int destY, boolean paint)
Copies a rectangular area of the receiver at the source position onto the receiver at the destination position.

(package private) static int createGdipFont(int hDC, int hFont, int graphics, int fontCollection, int[] outFamily, int[] outFont)

(package private) void destroy()
Disposes of the operating system resources associated with the graphics context.

(package private) static void destroyGdipBrush(int brush)

(package private) void disposeGdip()

void drawArc(int x, int y, int width, int height, int startAngle, int arcAngle)
Draws the outline of a circular or elliptical arc within the specified rectangular area.

(package private) void drawBitmap(Image srcImage, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY, int destWidth, int destHeight, boolean simple)

(package private) void drawBitmap(Image srcImage, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY, int destWidth, int destHeight, boolean simple, BITMAP bm, int imgWidth, int imgHeight)

(package private) void drawBitmapAlpha(Image srcImage, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY, int destWidth, int destHeight, boolean simple, BITMAP bm, int imgWidth, int imgHeight)

(package private) void drawBitmapMask(Image srcImage, int srcColor, int srcMask, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY, int destWidth, int destHeight, boolean simple, int imgWidth, int imgHeight, boolean offscreen)

(package private) void drawBitmapTransparent(Image srcImage, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY, int destWidth, int destHeight, boolean simple, BITMAP bm, int imgWidth, int imgHeight)

(package private) void drawBitmapTransparentByClipping(int srcHdc, int maskHdc, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY, int destWidth, int destHeight, boolean simple, int imgWidth, int imgHeight)

void drawFocus(int x, int y, int width, int height)
Draws a rectangle, based on the specified arguments, which has the appearance of the platform's focus rectangle if the platform supports such a notion, and otherwise draws a simple rectangle in the receiver's foreground color.

(package private) void drawIcon(Image srcImage, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY, int destWidth, int destHeight, boolean simple)

void drawImage(Image image, int x, int y)
Draws the given image in the receiver at the specified coordinates.

void drawImage(Image image, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY, int destWidth, int destHeight)
Copies a rectangular area from the source image into a (potentially different sized) rectangular area in the receiver.

(package private) void drawImage(Image srcImage, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY, int destWidth, int destHeight, boolean simple)

void drawLine(int x1, int y1, int x2, int y2)
Draws a line, using the foreground color, between the points (x1, y1) and (x2, y2).

void drawOval(int x, int y, int width, int height)
Draws the outline of an oval, using the foreground color, within the specified rectangular area.

void drawPath(Path path)
Draws the path described by the parameter.

void drawPoint(int x, int y)
Draws a pixel, using the foreground color, at the specified point (x, y).

void drawPolygon(int[] pointArray)
Draws the closed polygon which is defined by the specified array of integer coordinates, using the receiver's foreground color.

void drawPolyline(int[] pointArray)
Draws the polyline which is defined by the specified array of integer coordinates, using the receiver's foreground color.

void drawRectangle(int x, int y, int width, int height)
Draws the outline of the rectangle specified by the arguments, using the receiver's foreground color.

void drawRectangle(Rectangle rect)
Draws the outline of the specified rectangle, using the receiver's foreground color.

void drawRoundRectangle(int x, int y, int width, int height, int arcWidth, int arcHeight)
Draws the outline of the round-cornered rectangle specified by the arguments, using the receiver's foreground color.

(package private) void drawRoundRectangleGdip(int gdipGraphics, int pen, int x, int y, int width, int height, int arcWidth, int arcHeight)

void drawString(java.lang.String string, int x, int y)
Draws the given string, using the receiver's current font and foreground color.

void drawString(java.lang.String string, int x, int y, boolean isTransparent)
Draws the given string, using the receiver's current font and foreground color.

(package private) RectF drawText(int gdipGraphics, char[] buffer, int start, int length, int x, int y, int flags, int mnemonicIndex, TEXTMETRIC lptm, boolean draw)

(package private) void drawText(int gdipGraphics, java.lang.String string, int x, int y, int flags, Point size)

void drawText(java.lang.String string, int x, int y)
Draws the given string, using the receiver's current font and foreground color.

void drawText(java.lang.String string, int x, int y, boolean isTransparent)
Draws the given string, using the receiver's current font and foreground color.

void drawText(java.lang.String string, int x, int y, int flags)
Draws the given string, using the receiver's current font and foreground color.

(package private) void drawTextGDIP(int gdipGraphics, java.lang.String string, int x, int y, int flags, boolean draw, Point size)

boolean equals(java.lang.Object object)
Compares the argument to the receiver, and returns true if they represent the same object using a class specific comparison.

void fillArc(int x, int y, int width, int height, int startAngle, int arcAngle)
Fills the interior of a circular or elliptical arc within the specified rectangular area, with the receiver's background color.

void fillGradientRectangle(int x, int y, int width, int height, boolean vertical)
Fills the interior of the specified rectangle with a gradient sweeping from left to right or top to bottom progressing from the receiver's foreground color to its background color.

void fillOval(int x, int y, int width, int height)
Fills the interior of an oval, within the specified rectangular area, with the receiver's background color.

void fillPath(Path path)
Fills the path described by the parameter.

void fillPolygon(int[] pointArray)
Fills the interior of the closed polygon which is defined by the specified array of integer coordinates, using the receiver's background color.

void fillRectangle(int x, int y, int width, int height)
Fills the interior of the rectangle specified by the arguments, using the receiver's background color.

void fillRectangle(Rectangle rect)
Fills the interior of the specified rectangle, using the receiver's background color.

void fillRoundRectangle(int x, int y, int width, int height, int arcWidth, int arcHeight)
Fills the interior of the round-cornered rectangle specified by the arguments, using the receiver's background color.

(package private) void fillRoundRectangleGdip(int gdipGraphics, int brush, int x, int y, int width, int height, int arcWidth, int arcHeight)

(package private) void flush()

boolean getAdvanced()
Returns true if receiver is using the operating system's advanced graphics subsystem.

int getAdvanceWidth(char ch)
Returns the advance width of the specified character in the font which is currently selected into the receiver.

int getAlpha()
Returns the receiver's alpha value.

int getAntialias()
Returns the receiver's anti-aliasing setting value, which will be one of SWT.DEFAULT, SWT.OFF or SWT.ON.

Color getBackground()
Returns the background color.

Pattern getBackgroundPattern()
Returns the background pattern.

int getCharWidth(char ch)
Returns the width of the specified character in the font selected into the receiver.

Rectangle getClipping()
Returns the bounding rectangle of the receiver's clipping region.

void getClipping(Region region)
Sets the region managed by the argument to the current clipping region of the receiver.

(package private) int getCodePage()

(package private) int getFgBrush()

int getFillRule()
Returns the receiver's fill rule, which will be one of SWT.FILL_EVEN_ODD or SWT.FILL_WINDING.

Font getFont()
Returns the font currently being used by the receiver to draw and measure text.

FontMetrics getFontMetrics()
Returns a FontMetrics which contains information about the font currently being used by the receiver to draw and measure text.

Color getForeground()
Returns the receiver's foreground color.

Pattern getForegroundPattern()
Returns the foreground pattern.

GCData getGCData()
Returns the GCData.

int getInterpolation()
Returns the receiver's interpolation setting, which will be one of SWT.DEFAULT, SWT.NONE, SWT.LOW or SWT.HIGH.

LineAttributes getLineAttributes()
Returns the receiver's line attributes.

int getLineCap()
Returns the receiver's line cap style, which will be one of the constants SWT.CAP_FLAT, SWT.CAP_ROUND, or SWT.CAP_SQUARE.

int[] getLineDash()
Returns the receiver's line dash style.

int getLineJoin()
Returns the receiver's line join style, which will be one of the constants SWT.JOIN_MITER, SWT.JOIN_ROUND, or SWT.JOIN_BEVEL.

int getLineStyle()
Returns the receiver's line style, which will be one of the constants SWT.LINE_SOLID, SWT.LINE_DASH, SWT.LINE_DOT, SWT.LINE_DASHDOT or SWT.LINE_DASHDOTDOT.

int getLineWidth()
Returns the width that will be used when drawing lines for all of the figure drawing operations (that is, drawLine, drawRectangle, drawPolyline, and so forth.

int getStyle()
Returns the receiver's style information.

int getTextAntialias()
Returns the receiver's text drawing anti-aliasing setting value, which will be one of SWT.DEFAULT, SWT.OFF or SWT.ON.

void getTransform(Transform transform)
Sets the parameter to the transform that is currently being used by the receiver.

boolean getXORMode()
Returns true if this GC is drawing in the mode where the resulting color in the destination is the exclusive or of the color values in the source and the destination, and false if it is drawing in the mode where the destination color is being replaced with the source color value.

int hashCode()
Returns an integer hash code for the receiver.

(package private) int identity()

(package private) void init(Drawable drawable, GCData data, int hDC)

(package private) void initGdip()

boolean isClipped()
Returns true if the receiver has a clipping region set into it, and false otherwise.

boolean isDisposed()
Returns true if the GC has been disposed, and false otherwise.

(package private) float measureSpace(int font, int format)

void setAdvanced(boolean advanced)
Sets the receiver to always use the operating system's advanced graphics subsystem for all graphics operations if the argument is true.

void setAlpha(int alpha)
Sets the receiver's alpha value which must be between 0 (transparent) and 255 (opaque).

void setAntialias(int antialias)
Sets the receiver's anti-aliasing value to the parameter, which must be one of SWT.DEFAULT, SWT.OFF or SWT.ON.

void setBackground(Color color)
Sets the background color.

void setBackgroundPattern(Pattern pattern)
Sets the background pattern.

(package private) void setClipping(int clipRgn)

void setClipping(int x, int y, int width, int height)
Sets the area of the receiver which can be changed by drawing operations to the rectangular area specified by the arguments.

void setClipping(Path path)
Sets the area of the receiver which can be changed by drawing operations to the path specified by the argument.

void setClipping(Rectangle rect)
Sets the area of the receiver which can be changed by drawing operations to the rectangular area specified by the argument.

void setClipping(Region region)
Sets the area of the receiver which can be changed by drawing operations to the region specified by the argument.

void setFillRule(int rule)
Sets the receiver's fill rule to the parameter, which must be one of SWT.FILL_EVEN_ODD or SWT.FILL_WINDING.

void setFont(Font font)
Sets the font which will be used by the receiver to draw and measure text to the argument.

void setForeground(Color color)
Sets the foreground color.

void setForegroundPattern(Pattern pattern)
Sets the foreground pattern.

void setInterpolation(int interpolation)
Sets the receiver's interpolation setting to the parameter, which must be one of SWT.DEFAULT, SWT.NONE, SWT.LOW or SWT.HIGH.

void setLineAttributes(LineAttributes attributes)
Sets the receiver's line attributes.

void setLineCap(int cap)
Sets the receiver's line cap style to the argument, which must be one of the constants SWT.CAP_FLAT, SWT.CAP_ROUND, or SWT.CAP_SQUARE.

void setLineDash(int[] dashes)
Sets the receiver's line dash style to the argument.

void setLineJoin(int join)
Sets the receiver's line join style to the argument, which must be one of the constants SWT.JOIN_MITER, SWT.JOIN_ROUND, or SWT.JOIN_BEVEL.

void setLineStyle(int lineStyle)
Sets the receiver's line style to the argument, which must be one of the constants SWT.LINE_SOLID, SWT.LINE_DASH, SWT.LINE_DOT, SWT.LINE_DASHDOT or SWT.LINE_DASHDOTDOT.

void setLineWidth(int lineWidth)
Sets the width that will be used when drawing lines for all of the figure drawing operations (that is, drawLine, drawRectangle, drawPolyline, and so forth.

void setTextAntialias(int antialias)
Sets the receiver's text anti-aliasing value to the parameter, which must be one of SWT.DEFAULT, SWT.OFF or SWT.ON.

void setTransform(Transform transform)
Sets the transform that is currently being used by the receiver.

void setXORMode(boolean xor)
Deprecated.
this functionality is not supported on some platforms

Point stringExtent(java.lang.String string)
Returns the extent of the given string.

Point textExtent(java.lang.String string)
Returns the extent of the given string.

Point textExtent(java.lang.String string, int flags)
Returns the extent of the given string.

java.lang.String toString()
Returns a string containing a concise, human-readable description of the receiver.

(package private) boolean useGDIP(int hdc, char[] buffer)

static GC win32_new(Drawable drawable, GCData data)
Invokes platform specific functionality to allocate a new graphics context.

static GC win32_new(int hDC, GCData data)
Invokes platform specific functionality to wrap a graphics context.

Methods inherited from class org.eclipse.swt.graphics.Resource
dispose, getDevice, init

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

- Field Detail
  - handle
```
public int handle
```
    the handle to the OS device context (Warning: This field is platform dependent)
    IMPORTANT: This field is not part of the SWT public API. It is marked public only so that it can be shared within the packages provided by SWT. It is not available on all platforms and should never be accessed from application code.
  - drawable
```
Drawable drawable
```
  - data
```
GCData data
```
  - FOREGROUND
```
static final int FOREGROUND
```
    See Also:
    Constant Field Values
  - BACKGROUND
```
static final int BACKGROUND
```
    See Also:
    Constant Field Values
  - FONT
```
static final int FONT
```
    See Also:
    Constant Field Values
  - LINE_STYLE
```
static final int LINE_STYLE
```
    See Also:
    Constant Field Values
  - LINE_WIDTH
```
static final int LINE_WIDTH
```
    See Also:
    Constant Field Values
  - LINE_CAP
```
static final int LINE_CAP
```
    See Also:
    Constant Field Values
  - LINE_JOIN
```
static final int LINE_JOIN
```
    See Also:
    Constant Field Values
  - LINE_MITERLIMIT
```
static final int LINE_MITERLIMIT
```
    See Also:
    Constant Field Values
  - FOREGROUND_TEXT
```
static final int FOREGROUND_TEXT
```
    See Also:
    Constant Field Values
  - BACKGROUND_TEXT
```
static final int BACKGROUND_TEXT
```
    See Also:
    Constant Field Values
  - BRUSH
```
static final int BRUSH
```
    See Also:
    Constant Field Values
  - PEN
```
static final int PEN
```
    See Also:
    Constant Field Values
  - NULL_BRUSH
```
static final int NULL_BRUSH
```
    See Also:
    Constant Field Values
  - NULL_PEN
```
static final int NULL_PEN
```
    See Also:
    Constant Field Values
  - DRAW_OFFSET
```
static final int DRAW_OFFSET
```
    See Also:
    Constant Field Values
  - DRAW
```
static final int DRAW
```
    See Also:
    Constant Field Values
  - FILL
```
static final int FILL
```
    See Also:
    Constant Field Values
  - LINE_DOT_ZERO
```
static final float[] LINE_DOT_ZERO
```
  - LINE_DASH_ZERO
```
static final float[] LINE_DASH_ZERO
```
  - LINE_DASHDOT_ZERO
```
static final float[] LINE_DASHDOT_ZERO
```
  - LINE_DASHDOTDOT_ZERO
```
static final float[] LINE_DASHDOTDOT_ZERO
```
- Constructor Detail
  - GC
```
GC()
```
    Prevents uninitialized instances from being created outside the package.
  - GC
```
public GC(Drawable drawable)
```
    Constructs a new instance of this class which has been configured to draw on the specified drawable. Sets the foreground color, background color and font in the GC to match those in the drawable.
    You must dispose the graphics context when it is no longer required.
    Parameters:
    drawable - the drawable to draw on
    
    Throws:
    java.lang.IllegalArgumentException -
    
    ERROR_NULL_ARGUMENT - if the drawable is null
    
    ERROR_NULL_ARGUMENT - if there is no current device
    
    ERROR_INVALID_ARGUMENT - if the drawable is an image that is not a bitmap or an icon - if the drawable is an image or printer that is already selected into another graphics context
    SWTError -
    
    ERROR_NO_HANDLES if a handle could not be obtained for GC creation
    
    ERROR_THREAD_INVALID_ACCESS if not called from the thread that created the drawable
  - GC
```
public GC(Drawable drawable,
  int style)
```
    Constructs a new instance of this class which has been configured to draw on the specified drawable. Sets the foreground color, background color and font in the GC to match those in the drawable.
    You must dispose the graphics context when it is no longer required.
    Parameters:
    drawable - the drawable to draw on
    style - the style of GC to construct
    
    Throws:
    java.lang.IllegalArgumentException -
    
    ERROR_NULL_ARGUMENT - if the drawable is null
    
    ERROR_NULL_ARGUMENT - if there is no current device
    
    ERROR_INVALID_ARGUMENT - if the drawable is an image that is not a bitmap or an icon - if the drawable is an image or printer that is already selected into another graphics context
    SWTError -
    
    ERROR_NO_HANDLES if a handle could not be obtained for GC creation
    
    ERROR_THREAD_INVALID_ACCESS if not called from the thread that created the drawable
    Since:
    
    2.1.2
- Method Detail
  - checkStyle
```
static int checkStyle(int style)
```
  - checkGC
```
void checkGC(int mask)
```
  - copyArea
```
public void copyArea(Image image,
            int x,
            int y)
```
    Copies a rectangular area of the receiver at the specified position into the image, which must be of type SWT.BITMAP.
    Parameters:
    image - the image to copy into
    x - the x coordinate in the receiver of the area to be copied
    y - the y coordinate in the receiver of the area to be copied
    
    Throws:
    java.lang.IllegalArgumentException -
    
    ERROR_NULL_ARGUMENT - if the image is null
    
    ERROR_INVALID_ARGUMENT - if the image is not a bitmap or has been disposed
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
  - copyArea
```
public void copyArea(int srcX,
            int srcY,
            int width,
            int height,
            int destX,
            int destY)
```
    Copies a rectangular area of the receiver at the source position onto the receiver at the destination position.
    Parameters:
    srcX - the x coordinate in the receiver of the area to be copied
    srcY - the y coordinate in the receiver of the area to be copied
    width - the width of the area to copy
    height - the height of the area to copy
    destX - the x coordinate in the receiver of the area to copy to
    destY - the y coordinate in the receiver of the area to copy to
    
    Throws:
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
  - copyArea
```
public void copyArea(int srcX,
            int srcY,
            int width,
            int height,
            int destX,
            int destY,
            boolean paint)
```
    Copies a rectangular area of the receiver at the source position onto the receiver at the destination position.
    Parameters:
    srcX - the x coordinate in the receiver of the area to be copied
    srcY - the y coordinate in the receiver of the area to be copied
    width - the width of the area to copy
    height - the height of the area to copy
    destX - the x coordinate in the receiver of the area to copy to
    destY - the y coordinate in the receiver of the area to copy to
    paint - if true paint events will be generated for old and obscured areas
    
    Throws:
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
    Since:
    
    3.1
  - createGdipFont
```
static int createGdipFont(int hDC,
                 int hFont,
                 int graphics,
                 int fontCollection,
                 int[] outFamily,
                 int[] outFont)
```
  - destroyGdipBrush
```
static void destroyGdipBrush(int brush)
```
  - destroy
```
void destroy()
```
    Disposes of the operating system resources associated with the graphics context. Applications must dispose of all GCs which they allocate.
    Overrides:
    
    destroy in class Resource
    
    Throws:
    SWTError -
    
    ERROR_THREAD_INVALID_ACCESS if not called from the thread that created the drawable
  - disposeGdip
```
void disposeGdip()
```
  - drawArc
```
public void drawArc(int x,
           int y,
           int width,
           int height,
           int startAngle,
           int arcAngle)
```
    Draws the outline of a circular or elliptical arc within the specified rectangular area.
    The resulting arc begins at startAngle and extends for arcAngle degrees, using the current color. Angles are interpreted such that 0 degrees is at the 3 o'clock position. A positive value indicates a counter-clockwise rotation while a negative value indicates a clockwise rotation.
    The center of the arc is the center of the rectangle whose origin is (x, y) and whose size is specified by the width and height arguments.
    The resulting arc covers an area width + 1 pixels wide by height + 1 pixels tall.
    Parameters:
    x - the x coordinate of the upper-left corner of the arc to be drawn
    y - the y coordinate of the upper-left corner of the arc to be drawn
    width - the width of the arc to be drawn
    height - the height of the arc to be drawn
    startAngle - the beginning angle
    arcAngle - the angular extent of the arc, relative to the start angle
    
    Throws:
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
  - drawFocus
```
public void drawFocus(int x,
             int y,
             int width,
             int height)
```
    Draws a rectangle, based on the specified arguments, which has the appearance of the platform's focus rectangle if the platform supports such a notion, and otherwise draws a simple rectangle in the receiver's foreground color.
    Parameters:
    x - the x coordinate of the rectangle
    y - the y coordinate of the rectangle
    width - the width of the rectangle
    height - the height of the rectangle
    
    Throws:
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
    See Also:
    drawRectangle(int, int, int, int)
  - drawImage
```
public void drawImage(Image image,
             int x,
             int y)
```
    Draws the given image in the receiver at the specified coordinates.
    Parameters:
    image - the image to draw
    x - the x coordinate of where to draw
    y - the y coordinate of where to draw
    
    Throws:
    java.lang.IllegalArgumentException -
    
    ERROR_NULL_ARGUMENT - if the image is null
    
    ERROR_INVALID_ARGUMENT - if the image has been disposed
    
    ERROR_INVALID_ARGUMENT - if the given coordinates are outside the bounds of the image
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
    SWTError -
    
    ERROR_NO_HANDLES - if no handles are available to perform the operation
  - drawImage
```
public void drawImage(Image image,
             int srcX,
             int srcY,
             int srcWidth,
             int srcHeight,
             int destX,
             int destY,
             int destWidth,
             int destHeight)
```
    Copies a rectangular area from the source image into a (potentially different sized) rectangular area in the receiver. If the source and destination areas are of differing sizes, then the source area will be stretched or shrunk to fit the destination area as it is copied. The copy fails if any part of the source rectangle lies outside the bounds of the source image, or if any of the width or height arguments are negative.
    Parameters:
    image - the source image
    srcX - the x coordinate in the source image to copy from
    srcY - the y coordinate in the source image to copy from
    srcWidth - the width in pixels to copy from the source
    srcHeight - the height in pixels to copy from the source
    destX - the x coordinate in the destination to copy to
    destY - the y coordinate in the destination to copy to
    destWidth - the width in pixels of the destination rectangle
    destHeight - the height in pixels of the destination rectangle
    
    Throws:
    java.lang.IllegalArgumentException -
    
    ERROR_NULL_ARGUMENT - if the image is null
    
    ERROR_INVALID_ARGUMENT - if the image has been disposed
    
    ERROR_INVALID_ARGUMENT - if any of the width or height arguments are negative.
    ERROR_INVALID_ARGUMENT - if the source rectangle is not contained within the bounds of the source image
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
    SWTError -
    
    ERROR_NO_HANDLES - if no handles are available to perform the operation
  - drawImage
```
void drawImage(Image srcImage,
             int srcX,
             int srcY,
             int srcWidth,
             int srcHeight,
             int destX,
             int destY,
             int destWidth,
             int destHeight,
             boolean simple)
```
  - drawIcon
```
void drawIcon(Image srcImage,
            int srcX,
            int srcY,
            int srcWidth,
            int srcHeight,
            int destX,
            int destY,
            int destWidth,
            int destHeight,
            boolean simple)
```
  - drawBitmap
```
void drawBitmap(Image srcImage,
              int srcX,
              int srcY,
              int srcWidth,
              int srcHeight,
              int destX,
              int destY,
              int destWidth,
              int destHeight,
              boolean simple)
```
  - drawBitmapAlpha
```
void drawBitmapAlpha(Image srcImage,
                   int srcX,
                   int srcY,
                   int srcWidth,
                   int srcHeight,
                   int destX,
                   int destY,
                   int destWidth,
                   int destHeight,
                   boolean simple,
                   BITMAP bm,
                   int imgWidth,
                   int imgHeight)
```
  - drawBitmapTransparentByClipping
```
void drawBitmapTransparentByClipping(int srcHdc,
                                   int maskHdc,
                                   int srcX,
                                   int srcY,
                                   int srcWidth,
                                   int srcHeight,
                                   int destX,
                                   int destY,
                                   int destWidth,
                                   int destHeight,
                                   boolean simple,
                                   int imgWidth,
                                   int imgHeight)
```
  - drawBitmapMask
```
void drawBitmapMask(Image srcImage,
                  int srcColor,
                  int srcMask,
                  int srcX,
                  int srcY,
                  int srcWidth,
                  int srcHeight,
                  int destX,
                  int destY,
                  int destWidth,
                  int destHeight,
                  boolean simple,
                  int imgWidth,
                  int imgHeight,
                  boolean offscreen)
```
  - drawBitmapTransparent
```
void drawBitmapTransparent(Image srcImage,
                         int srcX,
                         int srcY,
                         int srcWidth,
                         int srcHeight,
                         int destX,
                         int destY,
                         int destWidth,
                         int destHeight,
                         boolean simple,
                         BITMAP bm,
                         int imgWidth,
                         int imgHeight)
```
  - drawBitmap
```
void drawBitmap(Image srcImage,
              int srcX,
              int srcY,
              int srcWidth,
              int srcHeight,
              int destX,
              int destY,
              int destWidth,
              int destHeight,
              boolean simple,
              BITMAP bm,
              int imgWidth,
              int imgHeight)
```
  - drawLine
```
public void drawLine(int x1,
            int y1,
            int x2,
            int y2)
```
    Draws a line, using the foreground color, between the points (x1, y1) and (x2, y2).
    Parameters:
    x1 - the first point's x coordinate
    y1 - the first point's y coordinate
    x2 - the second point's x coordinate
    y2 - the second point's y coordinate
    
    Throws:
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
  - drawOval
```
public void drawOval(int x,
            int y,
            int width,
            int height)
```
    Draws the outline of an oval, using the foreground color, within the specified rectangular area.
    The result is a circle or ellipse that fits within the rectangle specified by the x, y, width, and height arguments.
    The oval covers an area that is width + 1 pixels wide and height + 1 pixels tall.
    Parameters:
    x - the x coordinate of the upper left corner of the oval to be drawn
    y - the y coordinate of the upper left corner of the oval to be drawn
    width - the width of the oval to be drawn
    height - the height of the oval to be drawn
    
    Throws:
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
  - drawPath
```
public void drawPath(Path path)
```
    Draws the path described by the parameter.
    This operation requires the operating system's advanced graphics subsystem which may not be available on some platforms.
    Parameters:
    path - the path to draw
    
    Throws:
    java.lang.IllegalArgumentException -
    
    ERROR_NULL_ARGUMENT - if the parameter is null
    
    ERROR_INVALID_ARGUMENT - if the parameter has been disposed
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
    
    ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available
    Since:
    
    3.1
    
    See Also:
    Path
  - drawPoint
```
public void drawPoint(int x,
             int y)
```
    Draws a pixel, using the foreground color, at the specified point (x, y).
    Note that the receiver's line attributes do not affect this operation.
    Parameters:
    x - the point's x coordinate
    y - the point's y coordinate
    
    Throws:
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
    Since:
    
    3.0
  - drawPolygon
```
public void drawPolygon(int[] pointArray)
```
    Draws the closed polygon which is defined by the specified array of integer coordinates, using the receiver's foreground color. The array contains alternating x and y values which are considered to represent points which are the vertices of the polygon. Lines are drawn between each consecutive pair, and between the first pair and last pair in the array.
    Parameters:
    pointArray - an array of alternating x and y values which are the vertices of the polygon
    
    Throws:
    java.lang.IllegalArgumentException -
    
    ERROR_NULL_ARGUMENT if pointArray is null
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
  - drawPolyline
```
public void drawPolyline(int[] pointArray)
```
    Draws the polyline which is defined by the specified array of integer coordinates, using the receiver's foreground color. The array contains alternating x and y values which are considered to represent points which are the corners of the polyline. Lines are drawn between each consecutive pair, but not between the first pair and last pair in the array.
    Parameters:
    pointArray - an array of alternating x and y values which are the corners of the polyline
    
    Throws:
    java.lang.IllegalArgumentException -
    
    ERROR_NULL_ARGUMENT - if the point array is null
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
  - drawRectangle
```
public void drawRectangle(int x,
                 int y,
                 int width,
                 int height)
```
    Draws the outline of the rectangle specified by the arguments, using the receiver's foreground color. The left and right edges of the rectangle are at x and x + width. The top and bottom edges are at y and y + height.
    Parameters:
    x - the x coordinate of the rectangle to be drawn
    y - the y coordinate of the rectangle to be drawn
    width - the width of the rectangle to be drawn
    height - the height of the rectangle to be drawn
    
    Throws:
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
  - drawRectangle
```
public void drawRectangle(Rectangle rect)
```
    Draws the outline of the specified rectangle, using the receiver's foreground color. The left and right edges of the rectangle are at rect.x and rect.x + rect.width. The top and bottom edges are at rect.y and rect.y + rect.height.
    Parameters:
    rect - the rectangle to draw
    
    Throws:
    java.lang.IllegalArgumentException -
    
    ERROR_NULL_ARGUMENT - if the rectangle is null
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
  - drawRoundRectangle
```
public void drawRoundRectangle(int x,
                      int y,
                      int width,
                      int height,
                      int arcWidth,
                      int arcHeight)
```
    Draws the outline of the round-cornered rectangle specified by the arguments, using the receiver's foreground color. The left and right edges of the rectangle are at x and x + width. The top and bottom edges are at y and y + height. The roundness of the corners is specified by the arcWidth and arcHeight arguments, which are respectively the width and height of the ellipse used to draw the corners.
    Parameters:
    x - the x coordinate of the rectangle to be drawn
    y - the y coordinate of the rectangle to be drawn
    width - the width of the rectangle to be drawn
    height - the height of the rectangle to be drawn
    arcWidth - the width of the arc
    arcHeight - the height of the arc
    
    Throws:
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
  - drawRoundRectangleGdip
```
void drawRoundRectangleGdip(int gdipGraphics,
                          int pen,
                          int x,
                          int y,
                          int width,
                          int height,
                          int arcWidth,
                          int arcHeight)
```
  - drawString
```
public void drawString(java.lang.String string,
              int x,
              int y)
```
    Draws the given string, using the receiver's current font and foreground color. No tab expansion or carriage return processing will be performed. The background of the rectangular area where the string is being drawn will be filled with the receiver's background color.
    Parameters:
    string - the string to be drawn
    x - the x coordinate of the top left corner of the rectangular area where the string is to be drawn
    y - the y coordinate of the top left corner of the rectangular area where the string is to be drawn
    
    Throws:
    java.lang.IllegalArgumentException -
    
    ERROR_NULL_ARGUMENT - if the string is null
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
  - drawString
```
public void drawString(java.lang.String string,
              int x,
              int y,
              boolean isTransparent)
```
    Draws the given string, using the receiver's current font and foreground color. No tab expansion or carriage return processing will be performed. If isTransparent is true, then the background of the rectangular area where the string is being drawn will not be modified, otherwise it will be filled with the receiver's background color.
    Parameters:
    string - the string to be drawn
    x - the x coordinate of the top left corner of the rectangular area where the string is to be drawn
    y - the y coordinate of the top left corner of the rectangular area where the string is to be drawn
    isTransparent - if true the background will be transparent, otherwise it will be opaque
    
    Throws:
    java.lang.IllegalArgumentException -
    
    ERROR_NULL_ARGUMENT - if the string is null
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
  - drawText
```
public void drawText(java.lang.String string,
            int x,
            int y)
```
    Draws the given string, using the receiver's current font and foreground color. Tab expansion and carriage return processing are performed. The background of the rectangular area where the text is being drawn will be filled with the receiver's background color.
    Parameters:
    string - the string to be drawn
    x - the x coordinate of the top left corner of the rectangular area where the text is to be drawn
    y - the y coordinate of the top left corner of the rectangular area where the text is to be drawn
    
    Throws:
    java.lang.IllegalArgumentException -
    
    ERROR_NULL_ARGUMENT - if the string is null
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
  - drawText
```
public void drawText(java.lang.String string,
            int x,
            int y,
            boolean isTransparent)
```
    Draws the given string, using the receiver's current font and foreground color. Tab expansion and carriage return processing are performed. If isTransparent is true, then the background of the rectangular area where the text is being drawn will not be modified, otherwise it will be filled with the receiver's background color.
    Parameters:
    string - the string to be drawn
    x - the x coordinate of the top left corner of the rectangular area where the text is to be drawn
    y - the y coordinate of the top left corner of the rectangular area where the text is to be drawn
    isTransparent - if true the background will be transparent, otherwise it will be opaque
    
    Throws:
    java.lang.IllegalArgumentException -
    
    ERROR_NULL_ARGUMENT - if the string is null
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
  - drawText
```
public void drawText(java.lang.String string,
            int x,
            int y,
            int flags)
```
    Draws the given string, using the receiver's current font and foreground color. Tab expansion, line delimiter and mnemonic processing are performed according to the specified flags. If flags includes DRAW_TRANSPARENT, then the background of the rectangular area where the text is being drawn will not be modified, otherwise it will be filled with the receiver's background color.
    The parameter flags may be a combination of:
    
    DRAW_DELIMITER
    
    draw multiple lines
    
    DRAW_TAB
    
    expand tabs
    
    DRAW_MNEMONIC
    
    underline the mnemonic character
    
    DRAW_TRANSPARENT
    
    transparent background
    Parameters:
    string - the string to be drawn
    x - the x coordinate of the top left corner of the rectangular area where the text is to be drawn
    y - the y coordinate of the top left corner of the rectangular area where the text is to be drawn
    flags - the flags specifying how to process the text
    
    Throws:
    java.lang.IllegalArgumentException -
    
    ERROR_NULL_ARGUMENT - if the string is null
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
  - useGDIP
```
boolean useGDIP(int hdc,
              char[] buffer)
```
  - drawText
```
void drawText(int gdipGraphics,
            java.lang.String string,
            int x,
            int y,
            int flags,
            Point size)
```
  - drawText
```
RectF drawText(int gdipGraphics,
             char[] buffer,
             int start,
             int length,
             int x,
             int y,
             int flags,
             int mnemonicIndex,
             TEXTMETRIC lptm,
             boolean draw)
```
  - drawTextGDIP
```
void drawTextGDIP(int gdipGraphics,
                java.lang.String string,
                int x,
                int y,
                int flags,
                boolean draw,
                Point size)
```
  - equals
```
public boolean equals(java.lang.Object object)
```
    Compares the argument to the receiver, and returns true if they represent the same object using a class specific comparison.
    
    Overrides:
    
    equals in class java.lang.Object
    
    Parameters:
    object - the object to compare with this object
    
    Returns:
    true if the object is the same as this object and false otherwise
    See Also:
    hashCode()
  - fillArc
```
public void fillArc(int x,
           int y,
           int width,
           int height,
           int startAngle,
           int arcAngle)
```
    Fills the interior of a circular or elliptical arc within the specified rectangular area, with the receiver's background color.
    The resulting arc begins at startAngle and extends for arcAngle degrees, using the current color. Angles are interpreted such that 0 degrees is at the 3 o'clock position. A positive value indicates a counter-clockwise rotation while a negative value indicates a clockwise rotation.
    The center of the arc is the center of the rectangle whose origin is (x, y) and whose size is specified by the width and height arguments.
    The resulting arc covers an area width + 1 pixels wide by height + 1 pixels tall.
    Parameters:
    x - the x coordinate of the upper-left corner of the arc to be filled
    y - the y coordinate of the upper-left corner of the arc to be filled
    width - the width of the arc to be filled
    height - the height of the arc to be filled
    startAngle - the beginning angle
    arcAngle - the angular extent of the arc, relative to the start angle
    
    Throws:
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
    See Also:
    drawArc(int, int, int, int, int, int)
  - fillGradientRectangle
```
public void fillGradientRectangle(int x,
                         int y,
                         int width,
                         int height,
                         boolean vertical)
```
    Fills the interior of the specified rectangle with a gradient sweeping from left to right or top to bottom progressing from the receiver's foreground color to its background color.
    Parameters:
    x - the x coordinate of the rectangle to be filled
    y - the y coordinate of the rectangle to be filled
    width - the width of the rectangle to be filled, may be negative (inverts direction of gradient if horizontal)
    height - the height of the rectangle to be filled, may be negative (inverts direction of gradient if vertical)
    vertical - if true sweeps from top to bottom, else sweeps from left to right
    
    Throws:
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
    See Also:
    drawRectangle(int, int, int, int)
  - fillOval
```
public void fillOval(int x,
            int y,
            int width,
            int height)
```
    Fills the interior of an oval, within the specified rectangular area, with the receiver's background color.
    Parameters:
    x - the x coordinate of the upper left corner of the oval to be filled
    y - the y coordinate of the upper left corner of the oval to be filled
    width - the width of the oval to be filled
    height - the height of the oval to be filled
    
    Throws:
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
    See Also:
    drawOval(int, int, int, int)
  - fillPath
```
public void fillPath(Path path)
```
    Fills the path described by the parameter.
    This operation requires the operating system's advanced graphics subsystem which may not be available on some platforms.
    Parameters:
    path - the path to fill
    
    Throws:
    java.lang.IllegalArgumentException -
    
    ERROR_NULL_ARGUMENT - if the parameter is null
    
    ERROR_INVALID_ARGUMENT - if the parameter has been disposed
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
    
    ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available
    Since:
    
    3.1
    
    See Also:
    Path
  - fillPolygon
```
public void fillPolygon(int[] pointArray)
```
    Fills the interior of the closed polygon which is defined by the specified array of integer coordinates, using the receiver's background color. The array contains alternating x and y values which are considered to represent points which are the vertices of the polygon. Lines are drawn between each consecutive pair, and between the first pair and last pair in the array.
    Parameters:
    pointArray - an array of alternating x and y values which are the vertices of the polygon
    
    Throws:
    java.lang.IllegalArgumentException -
    
    ERROR_NULL_ARGUMENT if pointArray is null
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
    See Also:
    drawPolygon(int[])
  - fillRectangle
```
public void fillRectangle(int x,
                 int y,
                 int width,
                 int height)
```
    Fills the interior of the rectangle specified by the arguments, using the receiver's background color.
    Parameters:
    x - the x coordinate of the rectangle to be filled
    y - the y coordinate of the rectangle to be filled
    width - the width of the rectangle to be filled
    height - the height of the rectangle to be filled
    
    Throws:
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
    See Also:
    drawRectangle(int, int, int, int)
  - fillRectangle
```
public void fillRectangle(Rectangle rect)
```
    Fills the interior of the specified rectangle, using the receiver's background color.
    Parameters:
    rect - the rectangle to be filled
    
    Throws:
    java.lang.IllegalArgumentException -
    
    ERROR_NULL_ARGUMENT - if the rectangle is null
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
    See Also:
    drawRectangle(int, int, int, int)
  - fillRoundRectangle
```
public void fillRoundRectangle(int x,
                      int y,
                      int width,
                      int height,
                      int arcWidth,
                      int arcHeight)
```
    Fills the interior of the round-cornered rectangle specified by the arguments, using the receiver's background color.
    Parameters:
    x - the x coordinate of the rectangle to be filled
    y - the y coordinate of the rectangle to be filled
    width - the width of the rectangle to be filled
    height - the height of the rectangle to be filled
    arcWidth - the width of the arc
    arcHeight - the height of the arc
    
    Throws:
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
    See Also:
    drawRoundRectangle(int, int, int, int, int, int)
  - fillRoundRectangleGdip
```
void fillRoundRectangleGdip(int gdipGraphics,
                          int brush,
                          int x,
                          int y,
                          int width,
                          int height,
                          int arcWidth,
                          int arcHeight)
```
  - flush
```
void flush()
```
  - getAdvanceWidth
```
public int getAdvanceWidth(char ch)
```
    Returns the advance width of the specified character in the font which is currently selected into the receiver.
    The advance width is defined as the horizontal distance the cursor should move after printing the character in the selected font.
    Parameters:
    ch - the character to measure
    
    Returns:
    the distance in the x direction to move past the character before painting the next
    
    Throws:
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
  - getAdvanced
```
public boolean getAdvanced()
```
    Returns true if receiver is using the operating system's advanced graphics subsystem. Otherwise, false is returned to indicate that normal graphics are in use.
    Advanced graphics may not be installed for the operating system. In this case, false is always returned. Some operating system have only one graphics subsystem. If this subsystem supports advanced graphics, then true is always returned. If any graphics operation such as alpha, antialias, patterns, interpolation, paths, clipping or transformation has caused the receiver to switch from regular to advanced graphics mode, true is returned. If the receiver has been explicitly switched to advanced mode and this mode is supported, true is returned.
    Returns:
    the advanced value
    
    Throws:
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
    Since:
    
    3.1
    
    See Also:
    setAdvanced(boolean)
  - getAlpha
```
public int getAlpha()
```
    Returns the receiver's alpha value. The alpha value is between 0 (transparent) and 255 (opaque).
    Returns:
    the alpha value
    
    Throws:
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
    Since:
    
    3.1
  - getAntialias
```
public int getAntialias()
```
    Returns the receiver's anti-aliasing setting value, which will be one of SWT.DEFAULT, SWT.OFF or SWT.ON. Note that this controls anti-aliasing for all non-text drawing operations.
    Returns:
    the anti-aliasing setting
    
    Throws:
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
    Since:
    
    3.1
    
    See Also:
    getTextAntialias()
  - getBackground
```
public Color getBackground()
```
    Returns the background color.
    Returns:
    the receiver's background color
    
    Throws:
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
  - getBackgroundPattern
```
public Pattern getBackgroundPattern()
```
    Returns the background pattern. The default value is null.
    Returns:
    the receiver's background pattern
    
    Throws:
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
    Since:
    
    3.1
    
    See Also:
    Pattern
  - getCharWidth
```
public int getCharWidth(char ch)
```
    Returns the width of the specified character in the font selected into the receiver.
    The width is defined as the space taken up by the actual character, not including the leading and tailing whitespace or overhang.
    Parameters:
    ch - the character to measure
    
    Returns:
    the width of the character
    
    Throws:
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
  - getClipping
```
public Rectangle getClipping()
```
    Returns the bounding rectangle of the receiver's clipping region. If no clipping region is set, the return value will be a rectangle which covers the entire bounds of the object the receiver is drawing on.
    Returns:
    the bounding rectangle of the clipping region
    
    Throws:
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
  - getClipping
```
public void getClipping(Region region)
```
    Sets the region managed by the argument to the current clipping region of the receiver.
    Parameters:
    region - the region to fill with the clipping region
    
    Throws:
    java.lang.IllegalArgumentException -
    
    ERROR_NULL_ARGUMENT - if the region is null
    
    ERROR_INVALID_ARGUMENT - if the region is disposed
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
  - getCodePage
```
int getCodePage()
```
  - getFgBrush
```
int getFgBrush()
```
  - getFillRule
```
public int getFillRule()
```
    Returns the receiver's fill rule, which will be one of SWT.FILL_EVEN_ODD or SWT.FILL_WINDING.
    Returns:
    the receiver's fill rule
    
    Throws:
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
    Since:
    
    3.1
  - getFont
```
public Font getFont()
```
    Returns the font currently being used by the receiver to draw and measure text.
    Returns:
    the receiver's font
    
    Throws:
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
  - getFontMetrics
```
public FontMetrics getFontMetrics()
```
    Returns a FontMetrics which contains information about the font currently being used by the receiver to draw and measure text.
    Returns:
    font metrics for the receiver's font
    
    Throws:
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
  - getForeground
```
public Color getForeground()
```
    Returns the receiver's foreground color.
    Returns:
    the color used for drawing foreground things
    
    Throws:
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
  - getForegroundPattern
```
public Pattern getForegroundPattern()
```
    Returns the foreground pattern. The default value is null.
    Returns:
    the receiver's foreground pattern
    
    Throws:
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
    Since:
    
    3.1
    
    See Also:
    Pattern
  - getGCData
```
public GCData getGCData()
```
    Returns the GCData.
    IMPORTANT: This method is not part of the public API for GC. It is marked public only so that it can be shared within the packages provided by SWT. It is not available on all platforms, and should never be called from application code.
    Returns:
    the receiver's GCData
    
    Throws:
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
    Since:
    
    3.2
    
    See Also:
    GCData
  - getInterpolation
```
public int getInterpolation()
```
    Returns the receiver's interpolation setting, which will be one of SWT.DEFAULT, SWT.NONE, SWT.LOW or SWT.HIGH.
    Returns:
    the receiver's interpolation setting
    
    Throws:
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
    Since:
    
    3.1
  - getLineAttributes
```
public LineAttributes getLineAttributes()
```
    Returns the receiver's line attributes.
    Returns:
    the line attributes used for drawing lines
    
    Throws:
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
    Since:
    
    3.3
  - getLineCap
```
public int getLineCap()
```
    Returns the receiver's line cap style, which will be one of the constants SWT.CAP_FLAT, SWT.CAP_ROUND, or SWT.CAP_SQUARE.
    Returns:
    the cap style used for drawing lines
    
    Throws:
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
    Since:
    
    3.1
  - getLineDash
```
public int[] getLineDash()
```
    Returns the receiver's line dash style. The default value is null.
    Returns:
    the line dash style used for drawing lines
    
    Throws:
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
    Since:
    
    3.1
  - getLineJoin
```
public int getLineJoin()
```
    Returns the receiver's line join style, which will be one of the constants SWT.JOIN_MITER, SWT.JOIN_ROUND, or SWT.JOIN_BEVEL.
    Returns:
    the join style used for drawing lines
    
    Throws:
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
    Since:
    
    3.1
  - getLineStyle
```
public int getLineStyle()
```
    Returns the receiver's line style, which will be one of the constants SWT.LINE_SOLID, SWT.LINE_DASH, SWT.LINE_DOT, SWT.LINE_DASHDOT or SWT.LINE_DASHDOTDOT.
    Returns:
    the style used for drawing lines
    
    Throws:
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
  - getLineWidth
```
public int getLineWidth()
```
    Returns the width that will be used when drawing lines for all of the figure drawing operations (that is, drawLine, drawRectangle, drawPolyline, and so forth.
    Returns:
    the receiver's line width
    
    Throws:
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
  - getStyle
```
public int getStyle()
```
    Returns the receiver's style information.
    Note that the value which is returned by this method may not match the value which was provided to the constructor when the receiver was created. This can occur when the underlying operating system does not support a particular combination of requested styles.
    Returns:
    the style bits
    
    Throws:
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
    Since:
    
    2.1.2
  - getTextAntialias
```
public int getTextAntialias()
```
    Returns the receiver's text drawing anti-aliasing setting value, which will be one of SWT.DEFAULT, SWT.OFF or SWT.ON. Note that this controls anti-aliasing only for text drawing operations.
    Returns:
    the anti-aliasing setting
    
    Throws:
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
    Since:
    
    3.1
    
    See Also:
    getAntialias()
  - getTransform
```
public void getTransform(Transform transform)
```
    Sets the parameter to the transform that is currently being used by the receiver.
    Parameters:
    transform - the destination to copy the transform into
    
    Throws:
    java.lang.IllegalArgumentException -
    
    ERROR_NULL_ARGUMENT - if the parameter is null
    
    ERROR_INVALID_ARGUMENT - if the parameter has been disposed
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
    Since:
    
    3.1
    
    See Also:
    Transform
  - getXORMode
```
public boolean getXORMode()
```
    Returns true if this GC is drawing in the mode where the resulting color in the destination is the exclusive or of the color values in the source and the destination, and false if it is drawing in the mode where the destination color is being replaced with the source color value.
    Returns:
    true true if the receiver is in XOR mode, and false otherwise
    
    Throws:
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
  - initGdip
```
void initGdip()
```
  - identity
```
int identity()
```
  - init
```
void init(Drawable drawable,
        GCData data,
        int hDC)
```
  - hashCode
```
public int hashCode()
```
    Returns an integer hash code for the receiver. Any two objects that return true when passed to equals must return the same value for this method.
    Overrides:
    
    hashCode in class java.lang.Object
    
    Returns:
    the receiver's hash
    
    Throws:
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
    See Also:
    equals(java.lang.Object)
  - isClipped
```
public boolean isClipped()
```
    Returns true if the receiver has a clipping region set into it, and false otherwise. If this method returns false, the receiver will draw on all available space in the destination. If it returns true, it will draw only in the area that is covered by the region that can be accessed with getClipping(region).
    Returns:
    true if the GC has a clipping region, and false otherwise
    
    Throws:
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
  - isDisposed
```
public boolean isDisposed()
```
    Returns true if the GC has been disposed, and false otherwise.
    This method gets the dispose state for the GC. When a GC has been disposed, it is an error to invoke any other method (except Resource.dispose()) using the GC.
    
    Specified by:
    
    isDisposed in class Resource
    
    Returns:
    true when the GC is disposed and false otherwise
  - measureSpace
```
float measureSpace(int font,
                 int format)
```
  - setAdvanced
```
public void setAdvanced(boolean advanced)
```
    Sets the receiver to always use the operating system's advanced graphics subsystem for all graphics operations if the argument is true. If the argument is false, the advanced graphics subsystem is no longer used, advanced graphics state is cleared and the normal graphics subsystem is used from now on.
    Normally, the advanced graphics subsystem is invoked automatically when any one of the alpha, antialias, patterns, interpolation, paths, clipping or transformation operations in the receiver is requested. When the receiver is switched into advanced mode, the advanced graphics subsystem performs both advanced and normal graphics operations. Because the two subsystems are different, their output may differ. Switching to advanced graphics before any graphics operations are performed ensures that the output is consistent.
    Advanced graphics may not be installed for the operating system. In this case, this operation does nothing. Some operating system have only one graphics subsystem, so switching from normal to advanced graphics does nothing. However, switching from advanced to normal graphics will always clear the advanced graphics state, even for operating systems that have only one graphics subsystem.
    Parameters:
    advanced - the new advanced graphics state
    
    Throws:
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
    Since:
    
    3.1
    
    See Also:
    setAlpha(int), setAntialias(int), setBackgroundPattern(org.eclipse.swt.graphics.Pattern), setClipping(Path), setForegroundPattern(org.eclipse.swt.graphics.Pattern), setLineAttributes(org.eclipse.swt.graphics.LineAttributes), setInterpolation(int), setTextAntialias(int), setTransform(org.eclipse.swt.graphics.Transform), getAdvanced()
  - setAntialias
```
public void setAntialias(int antialias)
```
    Sets the receiver's anti-aliasing value to the parameter, which must be one of SWT.DEFAULT, SWT.OFF or SWT.ON. Note that this controls anti-aliasing for all non-text drawing operations.
    This operation requires the operating system's advanced graphics subsystem which may not be available on some platforms.
    Parameters:
    antialias - the anti-aliasing setting
    
    Throws:
    java.lang.IllegalArgumentException -
    
    ERROR_INVALID_ARGUMENT - if the parameter is not one of SWT.DEFAULT, SWT.OFF or SWT.ON
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
    
    ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available
    Since:
    
    3.1
    
    See Also:
    getAdvanced(), setAdvanced(boolean), setTextAntialias(int)
  - setAlpha
```
public void setAlpha(int alpha)
```
    Sets the receiver's alpha value which must be between 0 (transparent) and 255 (opaque).
    This operation requires the operating system's advanced graphics subsystem which may not be available on some platforms.
    Parameters:
    alpha - the alpha value
    
    Throws:
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
    
    ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available
    Since:
    
    3.1
    
    See Also:
    getAdvanced(), setAdvanced(boolean)
  - setBackground
```
public void setBackground(Color color)
```
    Sets the background color. The background color is used for fill operations and as the background color when text is drawn.
    Parameters:
    color - the new background color for the receiver
    
    Throws:
    java.lang.IllegalArgumentException -
    
    ERROR_NULL_ARGUMENT - if the color is null
    
    ERROR_INVALID_ARGUMENT - if the color has been disposed
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
  - setBackgroundPattern
```
public void setBackgroundPattern(Pattern pattern)
```
    Sets the background pattern. The default value is null.
    This operation requires the operating system's advanced graphics subsystem which may not be available on some platforms.
    Parameters:
    pattern - the new background pattern
    
    Throws:
    java.lang.IllegalArgumentException -
    
    ERROR_INVALID_ARGUMENT - if the parameter has been disposed
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
    
    ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available
    Since:
    
    3.1
    
    See Also:
    Pattern, getAdvanced(), setAdvanced(boolean)
  - setClipping
```
void setClipping(int clipRgn)
```
  - setClipping
```
public void setClipping(int x,
               int y,
               int width,
               int height)
```
    Sets the area of the receiver which can be changed by drawing operations to the rectangular area specified by the arguments.
    Parameters:
    x - the x coordinate of the clipping rectangle
    y - the y coordinate of the clipping rectangle
    width - the width of the clipping rectangle
    height - the height of the clipping rectangle
    
    Throws:
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
  - setClipping
```
public void setClipping(Path path)
```
    Sets the area of the receiver which can be changed by drawing operations to the path specified by the argument.
    This operation requires the operating system's advanced graphics subsystem which may not be available on some platforms.
    Parameters:
    path - the clipping path.
    
    Throws:
    java.lang.IllegalArgumentException -
    
    ERROR_INVALID_ARGUMENT - if the path has been disposed
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
    
    ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available
    Since:
    
    3.1
    
    See Also:
    Path, getAdvanced(), setAdvanced(boolean)
  - setClipping
```
public void setClipping(Rectangle rect)
```
    Sets the area of the receiver which can be changed by drawing operations to the rectangular area specified by the argument. Specifying null for the rectangle reverts the receiver's clipping area to its original value.
    Parameters:
    rect - the clipping rectangle or null
    
    Throws:
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
  - setClipping
```
public void setClipping(Region region)
```
    Sets the area of the receiver which can be changed by drawing operations to the region specified by the argument. Specifying null for the region reverts the receiver's clipping area to its original value.
    Parameters:
    region - the clipping region or null
    
    Throws:
    java.lang.IllegalArgumentException -
    
    ERROR_INVALID_ARGUMENT - if the region has been disposed
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
  - setFillRule
```
public void setFillRule(int rule)
```
    Sets the receiver's fill rule to the parameter, which must be one of SWT.FILL_EVEN_ODD or SWT.FILL_WINDING.
    Parameters:
    rule - the new fill rule
    
    Throws:
    java.lang.IllegalArgumentException -
    
    ERROR_INVALID_ARGUMENT - if the rule is not one of SWT.FILL_EVEN_ODD or SWT.FILL_WINDING
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
    Since:
    
    3.1
  - setFont
```
public void setFont(Font font)
```
    Sets the font which will be used by the receiver to draw and measure text to the argument. If the argument is null, then a default font appropriate for the platform will be used instead.
    Parameters:
    font - the new font for the receiver, or null to indicate a default font
    
    Throws:
    java.lang.IllegalArgumentException -
    
    ERROR_INVALID_ARGUMENT - if the font has been disposed
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
  - setForeground
```
public void setForeground(Color color)
```
    Sets the foreground color. The foreground color is used for drawing operations including when text is drawn.
    Parameters:
    color - the new foreground color for the receiver
    
    Throws:
    java.lang.IllegalArgumentException -
    
    ERROR_NULL_ARGUMENT - if the color is null
    
    ERROR_INVALID_ARGUMENT - if the color has been disposed
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
  - setForegroundPattern
```
public void setForegroundPattern(Pattern pattern)
```
    Sets the foreground pattern. The default value is null.
    This operation requires the operating system's advanced graphics subsystem which may not be available on some platforms.
    Parameters:
    pattern - the new foreground pattern
    
    Throws:
    java.lang.IllegalArgumentException -
    
    ERROR_INVALID_ARGUMENT - if the parameter has been disposed
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
    
    ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available
    Since:
    
    3.1
    
    See Also:
    Pattern, getAdvanced(), setAdvanced(boolean)
  - setInterpolation
```
public void setInterpolation(int interpolation)
```
    Sets the receiver's interpolation setting to the parameter, which must be one of SWT.DEFAULT, SWT.NONE, SWT.LOW or SWT.HIGH.
    This operation requires the operating system's advanced graphics subsystem which may not be available on some platforms.
    Parameters:
    interpolation - the new interpolation setting
    
    Throws:
    java.lang.IllegalArgumentException -
    
    ERROR_INVALID_ARGUMENT - if the rule is not one of SWT.DEFAULT, SWT.NONE, SWT.LOW or SWT.HIGH
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
    
    ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available
    Since:
    
    3.1
    
    See Also:
    getAdvanced(), setAdvanced(boolean)
  - setLineAttributes
```
public void setLineAttributes(LineAttributes attributes)
```
    Sets the receiver's line attributes.
    This operation requires the operating system's advanced graphics subsystem which may not be available on some platforms.
    Parameters:
    attributes - the line attributes
    
    Throws:
    java.lang.IllegalArgumentException -
    
    ERROR_NULL_ARGUMENT - if the attributes is null
    
    ERROR_INVALID_ARGUMENT - if any of the line attributes is not valid
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
    
    ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available
    Since:
    
    3.3
    
    See Also:
    LineAttributes, getAdvanced(), setAdvanced(boolean)
  - setLineCap
```
public void setLineCap(int cap)
```
    Sets the receiver's line cap style to the argument, which must be one of the constants SWT.CAP_FLAT, SWT.CAP_ROUND, or SWT.CAP_SQUARE.
    Parameters:
    cap - the cap style to be used for drawing lines
    
    Throws:
    java.lang.IllegalArgumentException -
    
    ERROR_INVALID_ARGUMENT - if the style is not valid
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
    Since:
    
    3.1
  - setLineDash
```
public void setLineDash(int[] dashes)
```
    Sets the receiver's line dash style to the argument. The default value is null. If the argument is not null, the receiver's line style is set to SWT.LINE_CUSTOM, otherwise it is set to SWT.LINE_SOLID.
    Parameters:
    dashes - the dash style to be used for drawing lines
    
    Throws:
    java.lang.IllegalArgumentException -
    
    ERROR_INVALID_ARGUMENT - if any of the values in the array is less than or equal 0
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
    Since:
    
    3.1
  - setLineJoin
```
public void setLineJoin(int join)
```
    Sets the receiver's line join style to the argument, which must be one of the constants SWT.JOIN_MITER, SWT.JOIN_ROUND, or SWT.JOIN_BEVEL.
    Parameters:
    join - the join style to be used for drawing lines
    
    Throws:
    java.lang.IllegalArgumentException -
    
    ERROR_INVALID_ARGUMENT - if the style is not valid
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
    Since:
    
    3.1
  - setLineStyle
```
public void setLineStyle(int lineStyle)
```
    Sets the receiver's line style to the argument, which must be one of the constants SWT.LINE_SOLID, SWT.LINE_DASH, SWT.LINE_DOT, SWT.LINE_DASHDOT or SWT.LINE_DASHDOTDOT.
    Parameters:
    lineStyle - the style to be used for drawing lines
    
    Throws:
    java.lang.IllegalArgumentException -
    
    ERROR_INVALID_ARGUMENT - if the style is not valid
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
  - setLineWidth
```
public void setLineWidth(int lineWidth)
```
    Sets the width that will be used when drawing lines for all of the figure drawing operations (that is, drawLine, drawRectangle, drawPolyline, and so forth.
    Note that line width of zero is used as a hint to indicate that the fastest possible line drawing algorithms should be used. This means that the output may be different from line width one.
    Parameters:
    lineWidth - the width of a line
    
    Throws:
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
  - setXORMode
```
public void setXORMode(boolean xor)
```
    Deprecated. this functionality is not supported on some platforms
    
    If the argument is true, puts the receiver in a drawing mode where the resulting color in the destination is the exclusive or of the color values in the source and the destination, and if the argument is false, puts the receiver in a drawing mode where the destination color is replaced with the source color value.
    Note that this mode in fundamentally unsupportable on certain platforms, notably Carbon (Mac OS X). Clients that want their code to run on all platforms need to avoid this method.
    Parameters:
    xor - if true, then xor mode is used, otherwise source copy mode is used
    
    Throws:
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
  - setTextAntialias
```
public void setTextAntialias(int antialias)
```
    Sets the receiver's text anti-aliasing value to the parameter, which must be one of SWT.DEFAULT, SWT.OFF or SWT.ON. Note that this controls anti-aliasing only for all text drawing operations.
    This operation requires the operating system's advanced graphics subsystem which may not be available on some platforms.
    Parameters:
    antialias - the anti-aliasing setting
    
    Throws:
    java.lang.IllegalArgumentException -
    
    ERROR_INVALID_ARGUMENT - if the parameter is not one of SWT.DEFAULT, SWT.OFF or SWT.ON
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
    
    ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available
    Since:
    
    3.1
    
    See Also:
    getAdvanced(), setAdvanced(boolean), setAntialias(int)
  - setTransform
```
public void setTransform(Transform transform)
```
    Sets the transform that is currently being used by the receiver. If the argument is null, the current transform is set to the identity transform.
    This operation requires the operating system's advanced graphics subsystem which may not be available on some platforms.
    Parameters:
    transform - the transform to set
    
    Throws:
    java.lang.IllegalArgumentException -
    
    ERROR_INVALID_ARGUMENT - if the parameter has been disposed
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
    
    ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available
    Since:
    
    3.1
    
    See Also:
    Transform, getAdvanced(), setAdvanced(boolean)
  - stringExtent
```
public Point stringExtent(java.lang.String string)
```
    Returns the extent of the given string. No tab expansion or carriage return processing will be performed.
    The extent of a string is the width and height of the rectangular area it would cover if drawn in a particular font (in this case, the current font in the receiver).
    Parameters:
    string - the string to measure
    
    Returns:
    a point containing the extent of the string
    
    Throws:
    java.lang.IllegalArgumentException -
    
    ERROR_NULL_ARGUMENT - if the string is null
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
  - textExtent
```
public Point textExtent(java.lang.String string)
```
    Returns the extent of the given string. Tab expansion and carriage return processing are performed.
    The extent of a string is the width and height of the rectangular area it would cover if drawn in a particular font (in this case, the current font in the receiver).
    Parameters:
    string - the string to measure
    
    Returns:
    a point containing the extent of the string
    
    Throws:
    java.lang.IllegalArgumentException -
    
    ERROR_NULL_ARGUMENT - if the string is null
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
  - textExtent
```
public Point textExtent(java.lang.String string,
               int flags)
```
    Returns the extent of the given string. Tab expansion, line delimiter and mnemonic processing are performed according to the specified flags, which can be a combination of:
    
    DRAW_DELIMITER
    
    draw multiple lines
    
    DRAW_TAB
    
    expand tabs
    
    DRAW_MNEMONIC
    
    underline the mnemonic character
    
    DRAW_TRANSPARENT
    
    transparent background
    
    The extent of a string is the width and height of the rectangular area it would cover if drawn in a particular font (in this case, the current font in the receiver).
    Parameters:
    string - the string to measure
    flags - the flags specifying how to process the text
    
    Returns:
    a point containing the extent of the string
    
    Throws:
    java.lang.IllegalArgumentException -
    
    ERROR_NULL_ARGUMENT - if the string is null
    SWTException -
    
    ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed
  - toString
```
public java.lang.String toString()
```
    Returns a string containing a concise, human-readable description of the receiver.
    
    Overrides:
    
    toString in class java.lang.Object
    
    Returns:
    a string representation of the receiver
  - win32_new
```
public static GC win32_new(Drawable drawable,
           GCData data)
```
    Invokes platform specific functionality to allocate a new graphics context.
    IMPORTANT: This method is not part of the public API for GC. It is marked public only so that it can be shared within the packages provided by SWT. It is not available on all platforms, and should never be called from application code.
    
    Parameters:
    drawable - the Drawable for the receiver.
    data - the data for the receiver.
    
    Returns:
    a new GC
  - win32_new
```
public static GC win32_new(int hDC,
           GCData data)
```
    Invokes platform specific functionality to wrap a graphics context.
    IMPORTANT: This method is not part of the public API for GC. It is marked public only so that it can be shared within the packages provided by SWT. It is not available on all platforms, and should never be called from application code.
    
    Parameters:
    hDC - the Windows HDC.
    data - the data for the receiver.
    
    Returns:
    a new GC

Class GC

Structure Diagram

Field Summary

Fields inherited from class org.eclipse.swt.graphics.Resource

Constructor Summary

Method Summary

Methods inherited from class org.eclipse.swt.graphics.Resource

Methods inherited from class java.lang.Object

Field Detail

handle

drawable

data

FOREGROUND

BACKGROUND

FONT

LINE_STYLE

LINE_WIDTH

LINE_CAP

LINE_JOIN

LINE_MITERLIMIT

FOREGROUND_TEXT

BACKGROUND_TEXT

BRUSH

PEN

NULL_BRUSH

NULL_PEN

DRAW_OFFSET

DRAW

FILL

LINE_DOT_ZERO

LINE_DASH_ZERO

LINE_DASHDOT_ZERO

LINE_DASHDOTDOT_ZERO

Constructor Detail

GC

GC

GC

Method Detail

checkStyle

checkGC

copyArea

copyArea

copyArea

createGdipFont

destroyGdipBrush

destroy

disposeGdip

drawArc

drawFocus

drawImage

drawImage

drawImage

drawIcon

drawBitmap

drawBitmapAlpha

drawBitmapTransparentByClipping

drawBitmapMask

drawBitmapTransparent

drawBitmap

drawLine

drawOval

drawPath

drawPoint

drawPolygon

drawPolyline

drawRectangle

drawRectangle

drawRoundRectangle

drawRoundRectangleGdip

drawString

drawString

drawText

drawText

drawText

useGDIP

drawText

drawText

drawTextGDIP

equals

fillArc