ICM_DECOMPRESS_GET_PALETTE
The
ICM_DECOMPRESS_GET_PALETTE message requests that the video decompression driver
supply the color table of the output BITMAPINFOHEADER structure. You can send
this message explicitly or by using the ICDecompressGetPalette macro.
ICM_DECOMPRESS_GET_PALETTE
wParam = (DWORD) (LPVOID) lpbiInput;
lParam = (DWORD) (LPVOID) lpbiOutput;
Parameters
lpbiInput
Address of a BITMAPINFOHEADER structure containing the
input format.
lpbiOutput
Address of a BITMAPINFOHEADER
structure to contain the color table. The space reserved for the color table is
always at least 256 colors. You can specify zero for this parameter to return
only the size of the color table.
Return Values
Returns
ICERR_OK if successful or an error otherwise.
Remarks
If lpbiOutput
is nonzero, the driver sets the biClrUsed member of BITMAPINFOHEADER
to the number of colors in the color table. The driver fills the bmiColors
members of BITMAPINFO with the actual colors.
The driver
should support this message only if it uses a palette other than the one
specified in the input format.
See Also