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If you want UFT to recognize the custom control as the highest Java object in the test object hierarchy, you need to inform UFT that this Java control is a top-level object. You do this by overriding the utility method isWindow(Object obj) in the support class to return true. In the following example, the JavaApplet AllLights is a top-level Java object.
Only a container object can be a top-level object. A container object is one that extends java.awt.container if it is AWT-based, or org.eclipse.swt.widgets.Composite if it is SWT-based.
If the control is a top-level object only in some situations, you can implement the isWindow method to return true in some situations and false in others. For example, an applet can be a standalone application or an object within a Web browser.