ExtCreateRegion function (wingdi.h)
The ExtCreateRegion function creates a region from the specified region and transformation data.
Syntax
HRGN ExtCreateRegion(
[in] const XFORM *lpx,
[in] DWORD nCount,
[in] const RGNDATA *lpData
);
Parameters
[in] lpx
A pointer to an XFORM structure that defines the transformation to be performed on the region. If this pointer is NULL, the identity transformation is used.
[in] nCount
The number of bytes pointed to by lpRgnData.
[in] lpData
A pointer to a RGNDATA structure that contains the region data in logical units.
Return value
If the function succeeds, the return value is the value of the region.
If the function fails, the return value is NULL.
Remarks
Region coordinates are represented as 27-bit signed integers.
An application can retrieve data for a region by calling the GetRegionData function.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows 2000 Professional [desktop apps only] |
| Minimum supported server | Windows 2000 Server [desktop apps only] |
| Target Platform | Windows |
| Header | wingdi.h (include Windows.h) |
| Library | Gdi32.lib |
| DLL | Gdi32.dll |