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