ICM_DECOMPRESS_SET_PALETTE message
The ICM_DECOMPRESS_SET_PALETTE message specifies a palette for a video decompression driver to use if it is decompressing to a format that uses a palette. You can send this message explicitly or by using the ICDecompressSetPalette macro.
ICM_DECOMPRESS_SET_PALETTE
wParam = (DWORD_PTR) (LPVOID) lpbiPalette;
lParam = 0;
Parameters
-
lpbiPalette
-
Pointer to a BITMAPINFOHEADER structure whose color table contains the colors that should be used if possible. You can specify zero to use the default set of output colors.
Return Value
Returns ICERR_OK if the decompression driver can precisely decompress images to the suggested palette using the set of colors as they are arranged in the palette. Returns ICERR_UNSUPPORTED otherwise.
Remarks
This message should not affect decompression already in progress; rather, colors passed using this message should be returned in response to future ICM_DECOMPRESS_GET_FORMAT and ICM_DECOMPRESS_GET_PALETTE messages. Colors are sent back to the decompression driver in a future ICM_DECOMPRESS_BEGIN message.
This message is used primarily when a driver decompresses images to the screen and another application that uses a palette is in the foreground, forcing the decompression driver to adapt to a foreign set of colors.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client |
Windows 2000 Professional [desktop apps only] |
| Minimum supported server |
Windows 2000 Server [desktop apps only] |
| Header |
|