The WODM_RESTART message requests a waveform output driver to continue playback of a waveform after playback has been paused with the WODM_PAUSE message.
Parameters
uDeviceId
Device identifier (0, 1, 2, and so on) for the target device.
uMsg
WODM_RESET
dwUser
Device instance identifier.
dwParam1
Not used.
dwParam2
Not used.
Return Value
The driver should return MMSYSERR_NOERROR if the operation succeeds. Otherwise it should return one of the MMSYSERR or WAVERR error codes defined in mmsystem.h. See waveOutRestart return values in the Win32 SDK.
Comments
A client sends the WODM_RESET message by calling the user-mode driver’s wodMessage entry point, passing the specified parameters.
Data output should resume from the position that was saved when the WODM_PAUSE message was received.
If the driver receives a WODM_RESTART message and output is not in a paused state, it should to nothing except return MMSYSERR_NOERROR.
Typically, the user-mode driver resumes device output by calling DeviceIoControl, sending the kernel-mode driver an IOCTL_WAVE_SET_STATE control code.