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ICM_DRAW_BEGIN
The ICM_DRAW_BEGIN message notifies a rendering driver to prepare to draw
data.
ICM_DRAW_BEGIN
wParam = (DWORD) (LPVOID) &icdrwBgn;
lParam = sizeof(ICDRAW);
Parameters
icdrwBgn
Address of an ICDRAWBEGIN structure containing the input format.
lParam
Size, in bytes, of ICDRAWBEGIN.
Return Values
Returns ICERR_OK if the driver supports drawing the data to the screen in the
specified manner and format, or an error code otherwise. Possible error values
include the following:
ICERR_BADFORMAT
| Input or output format is not supported.
| ICERR_NOTSUPPORTED
| Driver does not draw directly to the screen or does not support this message.
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Remarks
If you want the driver to decompress data into a buffer, send the
ICM_DECOMPRESS_BEGIN message.
The ICM_DRAW_BEGIN and ICM_DRAW_END messages do not nest. If your driver
receives ICM_DRAW_BEGIN before decompression is stopped with ICM_DRAW_END, it should
restart decompression with new parameters.
See Also
ICDRAWBEGIN, ICM_DECOMPRESS_BEGIN, ICM_DRAW_END
Related Links
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