Specifies shapes of which corners in the TRSGPRectangle rectangle object are customized according to the CornerType, XRadius, and YRadius properties.
By default, all four corners are customized.
Corners can contain a set of constants defined in the TRSCorner type: crTopLeft, crTopRight, crBottomLeft, and crBottomRight. Use the AllCorners constant to select all corners.
If Corners is an empty set or any of the XRadius and YRadius properties is zero, then no corner shape customization is used.