The GetRegionData function fills the specified buffer with data describing a region. This data includes the dimensions of the rectangles that make up the region.
DWORD GetRegionData(
HRGN hRgn, |
// handle of region |
DWORD dwCount, |
// size of buffer containing region data |
LPRGNDATA lpRgnData |
// address of buffer containing region data |
); |
If the function succeeds and dwCount specifies an adequate number of bytes, the return value is 1. If dwCount is too small or lpRgnData is NULL, the return value is the required number of bytes.
If the function fails, the return value is zero. To get extended error information, call GetLastError.
The GetRegionData function is used in conjunction with the ExtCreateRegion function.
file: /Techref/os/win/api/win32/func/src/f38_3.htm, 2KB, , updated: 2000/4/7 12:19, local time: 2024/8/23 05:40,
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