Thanks a lot. That worked great!

For the record, here is the final code wrapped into a subroutine. 

sub getSoundVolume {
    #usage: $tpcnt=getSoundVolume($hwnd) or ($tpcnt,$lpcnt,$rpcnt)=get
+SoundVolume($hwnd);
    #info: gets sound volume - $tpcnt is a number from 0 to 100.
    my $hwnd = shift || 0;
    my $vol=" "x10;
    $waveOutGetVolume ||= new Win32::API("Winmm", "waveOutGetVolume", 
+['N','P'], 'N') || return;
    my $ck = $waveOutGetVolume->Call($hwnd, $vol);
    my ($leftVol,$rightVol) = unpack 'vv', $vol;
    my $leftPercent  = int($leftVol  * 100 / 0xffff);
    my $rightPercent = int($rightVol * 100 / 0xffff);
    my $totalVolPercent = int(($leftPercent+$rightPercent)/2);
    if(wantarray){return ($totalVolPercent,$leftPercent,$rightPercent)
+;}
    return $totalVolPercent;
    }

[download]

In reply to Re^2: Output syntax for waveOutGetVolume API by slloyd
in thread Output syntax for waveOutGetVolume API by slloyd

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