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The waveOutWrite function sends a data block to the given waveform-audio output device.

Declare Function waveOutWrite Lib "winmm.dll" Alias "waveOutWrite" (ByVal hWaveOut As Long, lpWaveOutHdr As WAVEHDR, ByVal uSize As Long) As Long

Operating Systems Supported
Requires Windows NT 3.1 or later; Requires Windows 95 or later


Parameter Information
- hwo
Handle of the waveform-audio output device.

- pwh
Address of a WAVEHDR structure containing information about the data block.

- 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.
WAVERR_UNPREPARED The data block pointed to by the pwh parameter hasn't been prepared.

Last update: 07 April 2006