Anteckning
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The ICQueryAbout macro queries a video compression driver to determine if it has an About dialog box. You can use this macro or explicitly call the ICM_ABOUT message.
Syntax
DWORD ICQueryAbout(
hic
);
Parameters
hic
Handle of the compressor.
Return value
Type: DWORD
Returns ICERR_OK if the driver supports this message or ICERR_UNSUPPORTED otherwise.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows 2000 Professional [desktop apps only] |
| Minimum supported server | Windows 2000 Server [desktop apps only] |
| Target Platform | Windows |
| Header | vfw.h |