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ICDrawQuery

  • Artikel

The ICDrawQuery macro queries a rendering driver to determine if it can render data in a specific format. You can use this macro or explicitly call the ICM_DRAW_QUERY message.

DWORD ICDrawQuery(
 hic,        lpbiInput  );

Parameters

hic

Handle to a driver.

lpbiInput

Pointer to a BITMAPINFO structure containing the input format.

Return Values

Returns ICERR_OK if the driver can render data in the specified format or ICERR_BADFORMAT otherwise.

Remarks

This macro differs from the ICDrawBegin macro in that it queries the driver in a general sense. ICDrawBegin determines if the driver can draw the data using the specified format under specific conditions, such as stretching the image.

Requirements

**  Windows NT/2000/XP:** Included in Windows NT 3.1 and later.
**  Windows 95/98/Me:** Included in Windows 95 and later.
**  Header:** Declared in Vfw.h.

See Also

Video Compression Manager, Video Compression Macros, BITMAPINFO, ICDrawBegin, ICM_DRAW_QUERY