WODM_CLOSE (Windows CE 5.0)
This message is used in an MMDRV_MESSAGE_PARAMS structure passed to the WAV_IOControl function to request a waveform output driver to close a specified device instance that was previously opened with a WODM_OPEN message.
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 waveform API manager sends this message by calling the audio driver's WAV_IOControl entry point through the DeviceIoControl function.
If the client has passed data buffers to the driver by means of WODM_WRITE messages and the driver has not finished sending the data to the PDD, the driver returns WAVERR_STILLPLAYING in response to this message.
After the driver closes the device instance, it sends a WOM_CLOSE callback message to the waveform API manager.
Requirements
OS Versions: Windows CE 1.0 and later.
Header: Mmddk.h.
See Also
Waveform Output Driver Messages | WAV_IOControl | Audio Device Instances | MMDRV_MESSAGE_PARAMS
Send Feedback on this topic to the authors