WIDM_STOP (Windows CE 5.0)
This message is used in an MMDRV_MESSAGE_PARAMS structure passed to the WAV_IOControl function to request a waveform input driver to stop recording.
Parameters
- uDeviceId
Device identifier — 0, 1, 2, and so on — for the target device. - uMsg
Specifies this message. - dwUser
Specifies a device instance identifier. - dwParam1
Not used. - dwParam2
Not used.
Return Values
MMSYSERR_NOERROR indicates success. Otherwise, the driver returns one of the MMSYSERR or WAVERR error values declared in the Mmsystem.h header file.
Remarks
The ACM sends this message by calling the audio driver's WAV_IOControl entry point through the DeviceIoControl function.
If a buffer in the input queue has been partially filled, the driver treats it as a full buffer and returns it to the client. Empty buffers remain in the queue.
If this message is received and recording is already stopped, the driver returns MMSYSERR_NOERROR.
Requirements
OS Versions: Windows CE 1.0 and later.
Header: Mmddk.h.
See Also
Waveform Input Driver Messages | WAV_IOControl | MMDRV_MESSAGE_PARAMS | WIDM_ADDBUFFER | WIDM_START
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