The RGNDATAHEADER structure describes the data returned by the GetRegionData function.
typedef struct _RGNDATAHEADER { // rgndh
DWORD dwSize;
DWORD iType;
DWORD nCount;
DWORD nRgnSize;
RECT rcBound;
} RGNDATAHEADER;
Members
dwSize
Specifies the size, in bytes, of the header.
iType
Specifies the type of region. This value must be RDH_RECTANGLES.
nCount
Specifies the number of rectangles that make up the region.
nRgnSize
Specifies the size of the buffer required to receive the RECT structure that specifies the coordinates of the rectangles that make up the region. If the size is not known, this member can be zero.
rcBound
Specifies a bounding rectangle for the region.
See Also