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/DefaultToolTip.java
* @return the {@link Font} or <code>null</code> if the default font
	 *         should be used
	 */
	protected Font getFont(Event event) {
		return font;
	}
	/**
	 * The text displayed in the {@link CLabel} in the default implementation
	 * 
	 * @param event
	 *            the event triggered the popup of the tooltip
	 * @return the text or <code>null</code> if no text has to be displayed
	 */
	protected String getText(Event event) {
		return text;
	}
	/**
	 * The background {@link Image} used by {@link CLabel} in the default
	 * implementation
	 * 
	 * @param backgroundColor
	 *            the {@link Color} or <code>null</code> if default background
	 *            color ({@link SWT#COLOR_INFO_BACKGROUND}) should be used
	 */
	public void setBackgroundColor(Color backgroundColor) {
		this.backgroundColor = backgroundColor;
	}
	/**
	 * The background {@link Image} used by {@link CLabel} in the default
	 * implementation