unit1.pas

学习Delphi最好的教材。通过一个个简单而实用的实例

unit Unit1;

interface

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

type
  TForm1 = class(TForm)
    MediaPlayer1: TMediaPlayer;
    BitBtn1: TBitBtn;
    BitBtn2: TBitBtn;
    BitBtn3: TBitBtn;
    BitBtn4: TBitBtn;
    BitBtn5: TBitBtn;
    OpenDialog1: TOpenDialog;
    Gauge1: TGauge;
    Timer1: TTimer;
    Image1: TImage;
    procedure BitBtn1Click(Sender: TObject);
    procedure BitBtn2Click(Sender: TObject);
    procedure BitBtn3Click(Sender: TObject);
    procedure BitBtn4Click(Sender: TObject);
    procedure Timer1Timer(Sender: TObject);
    procedure BitBtn5Click(Sender: TObject);
    procedure FormShow(Sender: TObject);

  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

uses Unit2;

{$R *.dfm}

procedure TForm1.BitBtn1Click(Sender: TObject);
begin
  Form2.Show;
  MediaPlayer1.Play;
end;

procedure TForm1.BitBtn2Click(Sender: TObject);
begin
  MediaPlayer1.Pause;
end;

procedure TForm1.BitBtn3Click(Sender: TObject);
begin
  if OpenDialog1.Execute then
  begin
    MediaPlayer1.Close;
    MediaPlayer1.FileName:=OpenDialog1.FileName;
    MediaPlayer1.Open;
  end;
end;

procedure TForm1.BitBtn4Click(Sender: TObject);
begin
  MediaPlayer1.Position:=MediaPlayer1.Position
    + MediaPlayer1.Length div 10;
  MediaPlayer1.Play;
end;

procedure TForm1.Timer1Timer(Sender: TObject);
begin
  Gauge1.MaxValue:=MediaPlayer1.Length;
  Gauge1.Progress:=MediaPlayer1.Position;
end;

procedure TForm1.BitBtn5Click(Sender: TObject);
begin
  MediaPlayer1.Position:=MediaPlayer1.Position
    - MediaPlayer1.Length div 10;
  MediaPlayer1.Play;
end;

procedure TForm1.FormShow(Sender: TObject);
begin
  MediaPlayer1.DisplayRect:=Form2.Panel1.ClientRect;

end;

end.