mp3.txt

在delphi中选择相应的控件

unit mp3;

interface

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

type
  TForm1 = class(TForm)
    DriveComboBox1: TDriveComboBox;
    DirectoryListBox1: TDirectoryListBox;
    FileListBox1: TFileListBox;
    MediaPlayer1: TMediaPlayer;
    TrackBar1: TTrackBar;
    StatusBar1: TStatusBar;
    Timer1: TTimer;
    procedure FileListBox1Click(Sender: TObject);
    procedure Timer1Timer(Sender: TObject);
    procedure DirectoryListBox1Change(Sender: TObject);
    procedure FileListBox1Change(Sender: TObject);
    procedure FormCreate(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.FileListBox1Click(Sender: TObject);
begin
     mediaplayer1.FileName:=filelistbox1.FileName;
     mediaplayer1.Open;
      trackbar1.Max:=mediaplayer1.Length;
     statusbar1.SimpleText:=filelistbox1.FileName;
     timer1.Enabled:=true;
     mediaplayer1.play;

end;

procedure TForm1.Timer1Timer(Sender: TObject);
begin
   trackbar1.Position:=mediaplayer1.Position;
end;

procedure TForm1.DirectoryListBox1Change(Sender: TObject);
begin

end;

procedure TForm1.FileListBox1Change(Sender: TObject);
begin

end;

procedure TForm1.FormCreate(Sender: TObject);
begin

end;

end.