Bug 176158 Tool tip flickers
I20070227-0800 I'm using the new Tool tip support (org.eclipse.jface.window.ToolTip). The problem with this is that the tool tip flickers when the mouse is moved over an element. On mouse move the tool tip is hidden and then shown again. This makes the tool tip almost unusable. IMHO you should check that the mouse is still hovering over the same item and try to keep the visibility and position of the tooltip stable if so. I'll attach a little plugin showing the issue. Thanks
bundles/org.eclipse.jface/src/org/eclipse/jface/window/ToolTip.java
control.addListener(SWT.MouseHover, listener);
		control.addListener(SWT.MouseMove, listener);
		control.addListener(SWT.MouseExit, listener);
		control.addListener(SWT.MouseDown, listener);
	}
	/**
	 * Deactivate tooltip support for the underlying control
	 */
	public void deactivate() {
		control.removeListener(SWT.Dispose, listener);
		control.removeListener(SWT.MouseHover, listener);
		control.removeListener(SWT.MouseMove, listener);
		control.removeListener(SWT.MouseExit, listener);
		control.removeListener(SWT.MouseDown, listener);
	}
	/**
	 * Return whther the tooltip respects bounds of the display.
	 * 
	 * @return <code>true</code> if the tooltip respects bounds of the display
	 */
	public boolean isRespectDisplayBounds() {
		return respectDisplayBounds;
	}
	/**
	 * Set to <code>false</code> if display bounds should not be respected or
	 * to <code>true</code> if the tooltip is should repositioned to not
	 * overlap the display bounds.
	 * <p>
	 * Default is <code>true</code>
	 * </p>