This function sends an input buffer to the specified waveform-audio input device. When the buffer is filled, the application is notified.
At a Glance
| Header file: | Mmsystem.h |
| Windows CE versions: | 2.0 and later |
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 Values
One of the values described in the following table is returned.
| Value | Description |
| MMSYSERR_NOERROR | Success. |
| MMSYSERR_INVALHANDLE | Specified device handle is invalid. |
| MMSYSERR_NODRIVE | No device driver is present. |
| MMSYSERR_NOMEM | Unable to allocate or lock memory. |
| WAVERR_UNPREPARED | Buffer pointed to by the pwh parameter has not 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.