function GetLineState(device as DeviceControl, dwControlID as DWORD) as DWORD
    with device
        Dim as MIXERCONTROLDETAILS mxcd
        mxcd.dwControlID = dwControlID ' control ID
        mxcd.cChannels = 1             ' Apply volume uniformly to all channels
        mxcd.cMultipleItems = 0        ' Only setting one value

        ' Control status returned in this struct
        Dim as MIXERCONTROLDETAILS_UNSIGNED details

        mxcd.paDetails = @details
        mxcd.cbDetails = sizeof(details)
        mxcd.cbStruct  = sizeof(MIXERCONTROLDETAILS)

        '|| Crash      ||
        'vv       Here vv
        var result = mixerGetControlDetails(cast(HMIXEROBJ, .hMixer), @mxcd, MIXER_SETCONTROLDETAILSF_VALUE)
        if (result <> MMSYSERR_NOERROR) then
            print "Error #"; result; " getting line info for "; .szName
        end if

        return details.dwValue ' Return line control value
    end with
end function