Bug 81254 ControlExample spews warnings
observed on Solaris and hpux - run the ControlExample with warnings turned on (do this in Device I think) - a scrollbar warning is spewed on each page that's shown - this is ugly when using the swt-only download since warning messages are not supressed in this context
examples/org.eclipse.swt.examples/src/org/eclipse/swt/examples/controlexample/CanvasTab.java
GC gc = e.gc;
				if (fillDamageButton.getSelection ()) {
					Color color = e.display.getSystemColor (colors [paintCount % colors.length]);
					gc.setBackground(color);
					gc.fillRectangle(e.x, e.y, e.width, e.height);
				}
				Point size = canvas.getSize ();
				gc.drawArc(cx + 1, cy + 1, size.x - 2, size.y - 2, 0, 360);
				gc.drawRectangle(cx + (size.x - 10) / 2, cy + (size.y - 10) / 2, 10, 10);
			}
		});
		canvas.addControlListener(new ControlAdapter() {
			public void controlResized(ControlEvent event) {
				Point size = canvas.getSize ();
				maxX = size.x * 3 / 2; maxY = size.y * 3 / 2;
				resizeScrollBars ();
			}
		});
		ScrollBar bar = canvas.getHorizontalBar();
		if (bar != null) {
			bar.addSelectionListener(new SelectionAdapter() {
				public void widgetSelected(SelectionEvent event) {
					scrollHorizontal ((ScrollBar)event.widget);
				}
			});
		}
		bar = canvas.getVerticalBar();
		if (bar != null) {
			bar.addSelectionListener(new SelectionAdapter() {
				public void widgetSelected(SelectionEvent event) {