Mega Code Archive
How can I get the serial number of an Audio CD
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Title: How can I get the serial number of an Audio CD?
Question: How can I get the serial number of an Audio CD?
Answer:
The cd may or may not have a serial number and/or Universal Product Code embedded in the cd. The MCI Windows extension does provide this functionality through the MCI_INFO_MEDIA_IDENTITY command. This command will return a unique ID string consisting of 16 hexadecimal digits.
uses MMSystem, MPlayer;
procedure TForm1.Button1Click(Sender: TObject);
var
mp : TMediaPlayer;
msp : TMCI_INFO_PARMS;
MediaString : array[0..255] of char;
ret : longint;
begin
mp := TMediaPlayer.Create(nil);
mp.Visible := false;
mp.Parent := Application.MainForm;
mp.Shareable := true;
mp.DeviceType := dtCDAudio;
mp.FileName := 'D:';
mp.Open;
Application.ProcessMessages;
FillChar(MediaString, sizeof(MediaString), #0);
FillChar(msp, sizeof(msp), #0);
msp.lpstrReturn := @MediaString;
msp.dwRetSize := 255;
ret := mciSendCommand(Mp.DeviceId,
MCI_INFO,
MCI_INFO_MEDIA_IDENTITY,
longint(@msp));
if Ret 0 then
begin
MciGetErrorString(ret, @MediaString, sizeof(MediaString));
Memo1.Lines.Add(StrPas(MediaString));
end
else
Memo1.Lines.Add(StrPas(MediaString));
mp.Close;
Application.ProcessMessages;
mp.free;
end;
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