BASS_GetVolume

Retrieves the current master volume level.

float BASS_GetVolume();

Return value

If successful, the volume level is returned, else -1 is returned. Use BASS_ErrorGetCode to get the error code.

BASS_ERROR_INIT	BASS_Init has not been successfully called.
BASS_ERROR_NOTAVAIL	There is no volume control when using the "no sound" device.
BASS_ERROR_UNKNOWN	Some other mystery problem!

When using multiple devices, the current thread's device setting (as set with BASS_SetDevice) determines which device this function call applies to.