capGetAudioFormat macro (vfw.h)
The capGetAudioFormat macro obtains the audio format. You can use this macro or explicitly call the WM_CAP_GET_AUDIOFORMAT message.
Syntax
void capGetAudioFormat(
hwnd,
s,
wSize
);
Parameters
hwnd
Handle to a capture window.
s
Pointer to a WAVEFORMATEX structure, or NULL. If the value is NULL, the size, in bytes, required to hold the WAVEFORMATEX structure is returned.
wSize
Size, in bytes, of the structure referenced by s.
Return value
None
Remarks
Because compressed audio formats vary in size requirements applications must first retrieve the size, then allocate memory, and finally request the audio format data.
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 |