ICDrawQuery

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 of a driver.

lpbiInput

Address of 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.

QuickInfo

  Windows NT: Requires version 3.1 or later.
  Windows: Requires Windows 95 or later.
  Windows CE: Unsupported.
  Header: Declared in vfw.h.

See Also

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