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ExtCreateRegion info  Overview  Group

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. To get extended error information, call GetLastError.

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

GetRegionData, RGNDATA, XFORM 

file: /Techref/os/win/api/win32/func/src/f23_3.htm, 2KB, , updated: 2000/4/7 11:19, local time: 2024/11/28 02:02,
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