Bug 58095 [Preferences] Selecting pref page moved dialog to other screen
When I move the preferences dialog to my secondary screen and change a prefpage, the entire dialog moves back to my primary screen and "hugs" the right border of the main screen.
bundles/org.eclipse.jface/src/org/eclipse/jface/window/Window.java
*/
	private boolean resizeHasOccurred = false;
	private Listener resizeListener;
	
/**
 * Creates a window instance, whose shell will be created under the
 * given parent shell.
 * Note that the window will have no visual representation until it is told 
 * to open. By default, <code>open</code> does not block.
 *
 * @param parentShell the parent shell, or <code>null</code> to create a top-level shell
 * @see #setBlockOnOpen
 */
protected Window(Shell parentShell) {
	this.parentShell = parentShell;
}
/**
 * Determines if the window should handle the close event
 * or do nothing.
 * <p>
 * The default implementation of this framework method
 * returns <code>true</code>, which will allow the
 * <code>handleShellCloseEvent</code> method to be called.
 * Subclasses may extend or reimplement.
 * </p>
 * 
 * @return whether the window should handle the close event.
 */
protected boolean canHandleShellCloseEvent() {
	return true;