The GetDIBColorTable function retrieves RGB (red, green, blue) color values from a range of entries in the color table of the DIB section bitmap that is currently selected into a specified device context.
UINT GetDIBColorTable(
HDC hdc, |
// handle of device context whose DIB is of interest |
UINT uStartIndex, |
// color table index of first entry to retrieve |
UINT cEntries, |
// number of color table entries to retrieve |
RGBQUAD *pColors |
// pointer to buffer that receives color table entries |
); |
If the function succeeds, the return value is the number of color table entries that the function retrieves.
If the function fails, the return value is zero. To get extended error information, call GetLastError.
The GetDIBColorTable function should be called to retrieve the color table for DIB section bitmaps that use 1, 4, or 8 bits per pixel. The biBitCount member of a bitmap’s associated BITMAPINFOHEADER structure specifies the number of bits per pixel. DIB section bitmaps with a biBitCount value greater than 8 do not have a color table, but they do have associated color masks. Call the GetObject function to retrieve those color masks.
BITMAPINFOHEADER, CreateDIBSection, DIBSECTION, GetObject, RGBQUAD, SetDIBColorTable
See:
file: /Techref/os/win/api/win32/func/src/f30_13.htm, 3KB, , updated: 2001/6/26 11:22, local time: 2024/10/4 01:11,
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