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waveInPrepareHeader    

The waveInPrepareHeader function prepares a buffer for waveform-audio input.

MMRESULT waveInPrepareHeader(

    HWAVEIN hwi,

    LPWAVEHDR pwh,

    UINT cbwh

   );

Parameters

hwi
Handle of the waveform-audio input device.
pwh
Address of a WAVEHDR structure that identifies the buffer to be prepared.
cbwh
Size, in bytes, of the WAVEHDR structure.

Return Values

Returns MMSYSERR_NOERROR if successful or an error otherwise. Possible error values include the following:

MMSYSERR_INVALHANDLE

Specified device handle is invalid.

MMSYSERR_NODRIVER

No device driver is present.

MMSYSERR_NOMEM

Unable to allocate or lock memory.

Remarks

The lpData, dwBufferLength, and dwFlags members of the WAVEHDR structure must be set before calling this function (dwFlags must be zero).

See Also

 WAVEHDR 


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