Progblem mit CD öffnen/schließen programm

[DeddyH]

Delphi-Quellcode:

unit test1;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls, ExtCtrls, mmsystem;

type
  TForm1 = class(TForm)
    edit1: TLabeledEdit;
    Button1: TButton;
  private
    { Private-Deklarationen }
  public
    { Public-Deklarationen }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure OpenCDDrive(const ADriveChar: Char; Open: Boolean);
begin
  if mciSendString(PChar('open '+ADriveChar+': type cdaudio alias cdlw'),
                   Nil,
                   0,
                   0) = 0 then
  begin
    if Open then
      mciSendString('set cdlw door open wait', Nil, 0, 0)
    else
      mciSendString('set cdlw door closed wait', Nil, 0, 0);
    mciSendString('close cdlw', Nil, 0, 0);
  end;
end;

procedure TForm1.Button1Click(Sender: TObject);
begin
  if Length(edit1.text, true) > 0 then
    OpenCDDrive(edit1.text[1],true);
end;

end.

So wird ein Schuh draus