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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