Gets the collection of the shutter annotation objects.
LeadCollection that represents the collection of the shutter annotation objects.
You must attach the shutter to the viewer in order to be able to display the shutter, refer to Attach.
If no object is found, then the shutter canvas will be transparent.
The shutter engine only supports closed objects, like rectangle, ellipse and closed polygon.
The annotation objects must be children of the same container.
Medical Web Viewer .NET