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)
    OpenButton: TButton;
    PlayButton: TButton;
    PauseButton: TButton;
    RePlayButton: TButton;
    CloseButton: TButton;
    MediaPlayer1: TMediaPlayer;
    Timer1: TTimer;
    OpenDialog1: TOpenDialog;
    FileNameLabel: TLabel;
    procedure OpenButtonClick(Sender: TObject);
    procedure CloseButtonClick(Sender: TObject);
    procedure PlayButtonClick(Sender: TObject);
    procedure PauseButtonClick(Sender: TObject);
    procedure RePlayButtonClick(Sender: TObject);
    procedure Timer1Timer(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

Var
  EndPosition:Integer;

procedure TForm1.OpenButtonClick(Sender: TObject);
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;
            PlayButton.Enabled:=True;
            PauseButton.Enabled:=False;
            RePlayButton.Enabled:=False;
          end;
end;

procedure TForm1.CloseButtonClick(Sender: TObject);
begin
  MediaPlayer1.Close;
  close;
end;

procedure TForm1.PlayButtonClick(Sender: TObject);
begin
  if MediaPlayer1.Mode=mpPaused
    then MediaPlayer1.Resume
    else MediaPlayer1.Play;
    Pausebutton.Enabled:=True;
     RePlaybutton.Enabled:=True;
    Timer1.Enabled:=True;
end;

procedure TForm1.PauseButtonClick(Sender: TObject);
begin
  MediaPlayer1.Pause;
  Pausebutton.Enabled:=False;
  RePlaybutton.Enabled:=False;
end;

procedure TForm1.RePlayButtonClick(Sender: TObject);
begin
  MediaPlayer1.Rewind;
  MediaPlayer1.Play;
end;

procedure TForm1.Timer1Timer(Sender: TObject);
begin
  if MediaPlayer1.Position=EndPosition
     then begin
            MediaPlayer1.Rewind;
            MediaPlayer1.Play;
          end;
end;

end.