WODM_GETVOLUME
Sent to a waveform output device driver to request the current volume level setting for a 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. |
| MMSYSERR_NOTSUPPORTED |
The driver does not support changes to volume level. |
- DWORD dwParam1
- Specifies a far pointer to a DWORD location. The driver fills this location with the current volume level setting. The high-order word contains the right channel setting and the low-order word contains the left channel setting. A value of 0 is silence, and a value of 0xFFFF is full volume. If the driver does not support both left and right channel volume changes, it returns the volume in the low-order word.
- DWORD dwParam2
- Unused.
Drivers do not have to support volume level changes. However, if a driver supports changes to the volume level with the WODM_SETVOLUME message, it must support queries with the WODM_GETVOLUME message.
See Also
WODM_SETVOLUME