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
* The {@link Image} displayed in the {@link CLabel} in the default
	 * implementation implementation
	 * 
	 * @param image
	 *            the {@link Image} or <code>null</code> if no image should be
	 *            displayed
	 */
	public void setImage(Image image) {
		this.image = image;
	}
	/**
	 * The style used to create the {@link CLabel} in the default implementation
	 * 
	 * @param style
	 *            the event triggered the popup of the tooltip
	 */
	public void setStyle(int style) {
		this.style = style;
	}
	/**
	 * The text displayed in the {@link CLabel} in the default implementation
	 * 
	 * @param text
	 *            the text or <code>null</code> if no text has to be displayed
	 */
	public void setText(String text) {
		this.text = text;
	}
}