Specifies attributes of non-rectangular ROI associated with an image.

Values:

IG_CONTROL_NR_ROI_DIB	The value specified is a DIB to be used as a mask HIGEAR for the image.
IG_CONTROL_NR_ROI_REFERENCE_POINT	The value specified is a position within the HIGEAR image at which the upper-left corner of the masking HIGEAR should be placed.
IG_CONTROL_NR_ROI_CONDITION	The value specified indicates whether or not ImageGear should override the AT_RECT argument passed to its API. If TRUE then NRA ROI is used, otherwise the rectangular ROI is in effect.
IG_CONTROL_NR_ROI_REFERENCE_POINT_LEFT	The parameter specified is a mask reference point x component.
IG_CONTROL_NR_ROI_REFERENCE_POINT_TOP	The parameter specified is a mask reference point y component.
IG_CONTROL_NR_ROI_VALIDATE	The value returned specifies whether there is a valid mask associated with image.

Remarks:

See IG_IP_NR_ROI_control_set description for more information.