ExtCreateRegion
The ExtCreateRegion
function creates a region from the specified region and transformation data.
HRGN ExtCreateRegion(
|
CONST XFORM *lpXform, |
// pointer to
transformation data |
|
DWORD nCount, |
// size of
structure containing region data |
|
CONST RGNDATA *lpRgnData |
// pointer to
region data |
|
); |
|
Parameters
lpXform
Points to an XFORM structure that defines the
transformation to be performed on the region. If this pointer is NULL, the
identity transformation is used.
nCount
Specifies the
number of bytes pointed to by lpRgnData.
lpRgnData
Points to a RGNDATA structure that contains the
region data.
Return Values
If the
function succeeds, the return value is the value of the region.
If the
function fails, the return value is NULL.
Remarks
An
application can retrieve data for a region by calling the GetRegionData
function.
Windows
95: Regions are no longer limited to
the 64K heap.
Windows
95: World transforms that involve
either shearing or rotations are not supported. ExtCreateRegion fails if
the transformation matrix is anything other than a scaling or translation of
the region.
See Also