[news.eclipse.platform.swt] Problems with Double Buffer

[ibatis@xxxxxxxxx (KiMoon)]

hi.

By using double buffer, while drawing bar chart with horizontal scroll, 
there's a problem when adding a legend. 
Trying to put a legend section on the top right side of a view, as we 
scroll it from left to right, the legend flickers often, which makes the 
problem.
how do we make it not flickering so that always setting it on the fixed 
place?
And also when using double buffer, when we draw the legend upon a image, 
then when scrolling it, the legend often disappears instantly.
I need any kind of help. 
thanks.



canvas.addListener(SWT.Paint, new Listener() {
	public void handleEvent(Event event) {
			event.gc.drawImage(image, 0, 0);
			
			
			/** draw legend **/
			event.gc.setBackground(color);
			event.gc.fillRectangle(x, y, w, h);
			event.gc.drawText(string, x, y);
			
			event.gc.dispose();
		}
	}
});