unit1.pas.~1~

Delphi 2005程序设计教程_实例源文件和教学课件

unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, Borland.Vcl.ExtCtrls, Borland.Vcl.StdCtrls, System.ComponentModel,
  Borland.Vcl.MPlayer;

type
  TForm3 = class(TForm)
    MediaPlayer1: TMediaPlayer;
    FileNameLabel: TLabel;
    OpenButton: TButton;
    PlayButton: TButton;
    PauseButton: TButton;
    RePlayButton: TButton;
    CloseButton: TButton;
    Timer1: TTimer;
    OpenDialog1: TOpenDialog;
    procedure CloseButtonClick(Sender: TObject);
    procedure RePlayButtonClick(Sender: TObject);
    procedure PauseButtonClick(Sender: TObject);
    procedure PlayButtonClick(Sender: TObject);
    procedure OpenButtonClick(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form3: TForm3;

implementation

{$R *.nfm}

Var
  EndPosition:Integer;
procedure TForm3.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 TForm3.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 TForm3.PauseButtonClick(Sender: TObject);
begin 
  MediaPlayer1.Pause;
  Pausebutton.Enabled:=False;
  RePlaybutton.Enabled:=False;
end;

procedure TForm3.RePlayButtonClick(Sender: TObject);
begin
  MediaPlayer1.Rewind;
  MediaPlayer1.Play;
end;

procedure TForm3.CloseButtonClick(Sender: TObject);
begin
  MediaPlayer1.Close;
  close;
end;

end.