Click or drag to resize

IMcDisplayDisplayWhat Property

Determines whether the Image, Overlays or Both are included in the generated Display.

Namespace:  MediaCy.IQL.Display.Viewer
Assembly:  MediaCy.IQL.Display.Viewer (in MediaCy.IQL.Display.Viewer.dll) Version: 10.0.6912.0
Syntax
VB
Copy
Property DisplayWhat As mcDisplayWhat
	Get
	Set

Property Value

Type: mcDisplayWhat
Remarks
When DisplayWhat is not mcdwImageOnly or mcdwBothImageAndOverlays, then the viewer blackens the target display surface and doesn't display the image. However, the viewer's PostPaint event is still fired, allowing the overlays to paint onto the display surface. Assigning mcdwImageOnly or mcdwImageOnly will prevent AboutToPaint and PostPaint events being fired to all notify clients, thereby removing all overlay painting from the image. Individual overlays may be turned off via the NotifyEnabled property, and their notify order may be changed via the SetNotifyPriority method.
Note Note
This property is sometimes useful for improving performance by stopping image display even when you want to eventually display the image, especially if the image will undergo a multitude of interim changes during an involved process. Another possible use is if the display window is subclassed, perhaps by a capture driver. The subclassing code could then implement some specialized display code with out worrying about the viewer interfering.
See Also