Returns the current volume setting for the computer.
DWORD ITCAudioToneGetCurrentVolume(void);
None.
Returns the current volume as a scaled value that is consistent with the volume range associated with ITCAudioPlayTone. Range is 0 to 4. A value of 0 equals "no volume."
A value of -1 (0xFFFFFFFF) indicates that the current volume is unknown, meaning that a fault condition prevented access to the volume setting.