WIDM_CLOSE

Sent to a waveform input device driver to deallocate a specified device.

The return value is an error code, or zero (MMSYSERR_NOERROR) if the operation is successful. Possible error codes are:

MMSYSERR_NOTENABLED	The driver failed to load or initialize.
WAVERR_STILLPLAYING	There are still buffers in the queue.

DWORD dwParam1: Unused.
DWORD dwParam2: Unused.

If there are input buffers that haven't been returned to the application, the driver should fail the close operation by returning a WAVERR_STILLPLAYING error. If the close operation is successful, the driver should use the DriverCallback function to send the client a WIM_CLOSE message.

WIDM_CLOSE

See Also