waveInPrepareHeader (Windows CE 5.0)

Send Feedback

This function prepares a buffer for waveform input.

MMRESULT waveInPrepareHeader(HWAVEINhwi,LPWAVEHDRpwh,UINTcbwh );


  • hwi
    Handle to the waveform-audio input device.
  • pwh
    Pointer to a WAVEHDR structure that identifies the buffer to be prepared. The buffer's base address must be aligned with the respect to the sample size.
  • cbwh
    Size, in bytes, of the WAVEHDR structure.

Return Values

One of the values described in the following table is returned.

Value Description
MMSYSERR_INVALHANDLE Specified device handle is invalid.
MMSYSERR_INVALPARAM The buffer's base address is not aligned with the sample size.
MMSYSERR_NODRIVER No device driver is present.
MMSYSERR_NOMEM Unable to allocate or lock memory.


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


OS Versions: Windows CE 2.0 and later.
Header: Mmsystem.h.
Link Library: Coredll.lib.

See Also

Waveform Audio Functions | WAVEHDR

Send Feedback on this topic to the authors

Feedback FAQs

© 2006 Microsoft Corporation. All rights reserved.