'Declaration
Public Event ViewerDoubleClick As GdViewer.ViewerDoubleClickEventHandler
public event GdViewer.ViewerDoubleClickEventHandler ViewerDoubleClick
public event ViewerDoubleClick: GdViewer.ViewerDoubleClickEventHandler;
In JScript, you can handle the events defined by another class, but you cannot define your own.
public: __event GdViewer.ViewerDoubleClickEventHandler* ViewerDoubleClick
public: event GdViewer.ViewerDoubleClickEventHandler^ ViewerDoubleClick