The DISPREGIONPROPS structure contains options for controlling the region of interest feature.
Flag that indicates whether to create the region from the center as the user drags the mouse. Possible values are:
|Create from center.
|Create from edge. This is the default value.
The action to apply on the existing bitmap region, if one is defined. For descriptions of the possible values, refer to Creating a Bitmap Region Inside the Image Viewer.
This structure contains information that controls the following actions: