unit1.~pas

这有很多Delphi应用的例子

unit Unit1;

interface

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

type
  TForm1 = class(TForm)
    Button1: TButton;
    Button2: TButton;
    Button3: TButton;
    Button4: TButton;
    Button5: TButton;
    MediaPlayer1: TMediaPlayer;
    Timer1: TTimer;
    OpenDialog1: TOpenDialog;
    FileNameLabel: TLabel;
    procedure Button1Click(Sender: TObject);
    procedure Button5Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.Button1Click(Sender: TObject);
Var
  EndPosition:Integer;
begin
  OpenDialog1.FileName:='*.avi';
  if OpenDialog1.Execute
     then begin
            MediaPlayer1.Close;
            MediaPlayer1.FileName:=OpenDialog1.FileName;
            FileNameLabel.Caption:='当前播放文件:'+
               ExtractFileName(OpenDialog1.FileName);
            MediaPlayer1.Open;
            MediaPlayer1.Next;
            EndPosition:=MediaPlayer1.Position;
            MediaPlayer1.Rewind;
            Button2.Enabled:=True;
            Button3.Enabled:=False;
            Button4.Enabled:=False;
          end;
end;

procedure TForm1.Button5Click(Sender: TObject);
begin
  exit;
end;

end.