Use by the controls to render the regions outlines.
public sealed class ControlRegionRenderer
Public NotInheritable Class ControlRegionRenderer
public ref class ControlRegionRenderer sealed
ControlRegionRenderer is used internally by ImageViewer to render the outlines of image and floater regions.
This is a singleton class and cannot be initiated directly.
You can customize the region renderer by setting a new callback in RegionRenderCallback.
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