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The auxGetVolume function retrieves the current volume setting of the specified auxiliary output device.
MMRESULT auxGetVolume(
UINT uDeviceID, | |
LPDWORD lpdwVolume | |
); |
If a device does not support both left and right volume control, the low-order word of the specified location contains the volume level.
The full 16-bit setting(s) set with the auxSetVolume function are returned, regardless of whether the device supports the full 16 bits of volume-level control.
Returns MMSYSERR_NOERROR if successful or an error otherwise. Possible error values include the following:
MMSYSERR_BADDEVICEID |
Specified device identifier is out of range. |
Not all devices support volume control. To determine whether a device supports volume control, use the AUXCAPS_VOLUME flag to test the dwSupport member of the AUXCAPS structure (filled by the auxGetDevCaps function).
To determine whether a device supports volume control on both the left and right channels, use the AUXCAPS_LRVOLUME flag to test the dwSupport member of the AUXCAPS structure (filled by auxGetDevCaps).
auxSetVolume, AUXCAPS, auxGetDevCaps
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