waveInStart

The waveInStart function starts input on the given waveform-audio input device.

MMRESULT waveInStart(
  HWAVEIN hwi  
);
 

Parameters

hwi
Handle of the waveform-audio input device.

Return Values

Returns MMSYSERR_NOERROR if successful or an error otherwise. Possible error values include the following:

Value Description
MMSYSERR_INVALHANDLE Specified device handle is invalid.
MMSYSERR_NODRIVER No device driver is present.
MMSYSERR_NOMEM Unable to allocate or lock memory.

Remarks

Buffers are returned to the application when full or when the waveInReset function is called (the dwBytesRecorded member in the header will contain the length of data). If there are no buffers in the queue, the data is thrown away without notifying the application, and input continues.

Calling this function when input is already started has no effect, and the function returns zero.

QuickInfo

  Windows NT: Requires version 3.1 or later.
  Windows: Requires Windows 95 or later.
  Windows CE: Requires version 2.0 or later.
  Header: Declared in mmsystem.h.
  Import Library: Use winmm.lib.

See Also

Waveform Audio Overview, Waveform Functions, waveInReset