Examples of org.eclipse.swt.graphics.GC.dispose()

org.eclipse.swt.graphics.GC.dispose()
Disposes of the operating system resources associated with the graphics context. Applications must dispose of all GCs which they allocate.


    GC gc = new GC(canvas);
    
    gc.drawImage(bufferImage,bounds.x,bounds.y);
    
    gc.dispose();   
  }
  
  
  protected void 
  drawPlot()

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          SWT.DRAW_TRANSPARENT );




      image.drawText( title, ( bounds.width - title.length()*char_width )/2, 1, SWT.DRAW_TRANSPARENT );


      image.dispose();


    }finally{


      this_mon.exit();
    }

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      gcImage.fillRectangle(x0, borderHorizontalSize, limit, completionHeight);
    } catch (Exception e) {
      System.out.println("Error Drawing PiecesItem");
      Debug.printStackTrace(e);
    }
    gcImage.dispose();


    Image oldImage = null;
    Graphic graphic = cell.getGraphic();
    if (graphic instanceof UISWTGraphic) {
      oldImage = ((UISWTGraphic) graphic).getImage();

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        GC gc = new GC( canvas );
  
        gc.drawImage( buffer_image, bounds.x, bounds.y );
  
        gc.dispose();   
      }
    }
    
    private Image
    draw(

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      gc.drawText( y_text, y_axis_top_x+4, y_axis_top_y + 2, SWT.DRAW_TRANSPARENT );


      gc.drawText( title, ( bounds.width - title.length()*char_width )/2, 1, SWT.DRAW_TRANSPARENT );
      
      gc.dispose();


      return( image );
    }
    
    protected void

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    gc.setForeground(red);
    drawSelf(gc, ownCoords.getX(), ownCoords.getY(),
             ownCoords.getH(), ownErrorEstimate);
    
    
    gc.dispose();
    
    canvas.redraw();
  }
  
  public void refresh(List vivaldiPositions) {

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      gc.setForeground(drawColor);
      draw(gc,coord.getX(),coord.getY(),coord.getH());
      drawColor.dispose();
    }
    
    gc.dispose();
    
    canvas.redraw();
  }
  
  private void draw(GC gc,float x,float y,float h) {

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    // draw pointers
    gc.setBackground(pointerColor);
    gc.fillPolygon(new int[] { up_coord, y, up_coord + pointer_width, y - pointer_height, up_coord - pointer_width, y - pointer_height});
    int y2 = y + bar_height;
    gc.fillPolygon(new int[] { down_coord, y2, down_coord + pointer_width, y2 + pointer_height, down_coord - pointer_width, y2 + pointer_height});
    gc.dispose();
  }


  private SelectedPointer getSelectedPointer(int x,int y) {
    int up_coord = getUpCoord();
    int down_coord = getDownCoord();

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        if (gc == null) {
          return;
        }
        gc.drawImage(image, 0, 0, imageBounds.width, imageBounds.height, 
                     0, 0, bounds.width, bounds.height);
        gc.dispose();
/*
        // _OR_ enable refresh() for slower visual update with lots of flicker
        //refresh();
        
        // OR, disable both and image will be updated on next graphic bar update

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*/
      int x = 0;
      gc.setClipping(clipping);
      gc.drawImage(image, x, 0);
    }
    gc.dispose();
  }


  /** Don't forget to call super.dispose()! */
  public void dispose() {
    super.dispose();

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