waveInAddBuffer function
The waveInAddBuffer function sends an input buffer to the given waveform-audio input device. When the buffer is filled, the application is notified.
Syntax
MMRESULT waveInAddBuffer(
HWAVEIN hwi,
LPWAVEHDR pwh,
UINT cbwh
);
Parameters
hwi
Handle to the waveform-audio input device.pwh
Pointer to a WAVEHDR structure that identifies the buffer.cbwh
Size, in bytes, of the WAVEHDR structure.
Return value
Returns MMSYSERR_NOERROR if successful or an error otherwise. Possible error values include the following.
| Return code | Description |
|---|---|
| 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 buffer pointed to by the pwh parameter hasn't been prepared. |
Remarks
When the buffer is filled, the WHDR_DONE bit is set in the dwFlags member of the WAVEHDR structure.
The buffer must be prepared with the waveInPrepareHeader function before it is passed to this function.
Requirements
Minimum supported client |
Windows 2000 Professional [desktop apps only] |
Minimum supported server |
Windows 2000 Server [desktop apps only] |
Header |
Mmsystem.h (include Windows.h) |
Library |
Winmm.lib |
DLL |
Winmm.dll |