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2.1.29 RegionMode Enumeration

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The RegionMode enumeration defines values that are used with EMR_SELECTCLIPPATH and EMR_EXTSELECTCLIPRGN, specifying the current path bracket or a new region that is being combined with the current clipping region.

 typedef  enum 
 {
   RGN_AND = 0x01,
   RGN_OR = 0x02,
   RGN_XOR = 0x03,
   RGN_DIFF = 0x04,
   RGN_COPY = 0x05
 } RegionMode;

RGN_AND: The new clipping region includes the intersection (overlapping areas) of the current clipping region and the current path bracket (or new region).

RGN_OR: The new clipping region includes the union (combined areas) of the current clipping region and the current path bracket (or new region).

RGN_XOR: The new clipping region includes the union of the current clipping region and the current path bracket (or new region) but without the overlapping areas.

RGN_DIFF: The new clipping region includes the areas of the current clipping region with those of the current path bracket (or new region) excluded.

RGN_COPY: The new clipping region is the current path bracket (or the new region).