This event is raised right before a new GdPicture/XMP annotation is to be added by a user. This event occurs in the mouse down action, therefore it allows you to change some properties of the newly added annotation before rendering it on the screen.

The event makes use of tunel routing strategy. Please check the corresponded GdViewer.BeforeAnnotationAddedByUserEventArgs for given parameters.

'Declaration
 
Public Event PreviewBeforeAnnotationAddedByUser As GdViewer.PreviewBeforeAnnotationAddedByUserHandler

public event GdViewer.PreviewBeforeAnnotationAddedByUserHandler PreviewBeforeAnnotationAddedByUser

public event PreviewBeforeAnnotationAddedByUser: GdViewer.PreviewBeforeAnnotationAddedByUserHandler; 

In JScript, you can handle the events defined by another class, but you cannot define your own.

public: __event GdViewer.PreviewBeforeAnnotationAddedByUserHandler* PreviewBeforeAnnotationAddedByUser

public:
event GdViewer.PreviewBeforeAnnotationAddedByUserHandler^ PreviewBeforeAnnotationAddedByUser