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procedure SetVolume(X: Word);
var
iErr: Integer;
i: integer;
a: TAuxCaps;
begin
for i := 0 to auxGetNumDevs do
begin
auxGetDevCaps(i, Addr(a), SizeOf(a));
if a.wTechnology = AUXCAPS_CDAUDIO then
break;
end;
// Sets volume equally for left and right channels.
// VOLUME := LEFT * $10000 + RIGHT * 1 (or the other way? :)
iErr := auxSetVolume(i, (X * $10001));
if (iErr = 0) then
ShowMessage('No audio devices are available!');
end;
function GetVolume: Word;
var
iErr: Integer;
i: integer;
a: TAuxCaps;
vol: word;
begin
for i := 0 to auxGetNumDevs do
begin
auxGetDevCaps(i, Addr(a), SizeOf(a));
if a.wTechnology = AUXCAPS_CDAUDIO then
break;
end;
iErr := auxGetVolume(i, addr(vol));
GetVolume := vol;
if (iErr = 0) then
ShowMessage('No audio devices are available!');
end;
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