Return Value
A member of the GdPictureStatus enumeration. If the method has been successfully followed, then the return value is GdPictureStatus.OK.
We strongly recommend always checking this status first.
This method sets the GdViewer.ZoomMode property to ViewerZoomMode.ZoomModeCustom and refreshes the control as well.
Both the GdViewer.BeforeZoomChange and the GdViewer.AfterZoomChange events are raised using this method.