bjts.pas

本光盘是《Delphi 7应用教程》一书的配套光盘

unit BJTS;

interface

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

type
  TForm1 = class(TForm)
    Label1: TLabel;
    Label2: TLabel;
    Label3: TLabel;
    Label4: TLabel;
    Button1: TButton;
    MediaPlayer1: TMediaPlayer;
    Button2: TButton;
    MediaPlayer2: TMediaPlayer;
    OpenDialog1: TOpenDialog;
    procedure Label1MouseMove(Sender: TObject; Shift: TShiftState; X,
      Y: Integer);
    procedure Label2MouseMove(Sender: TObject; Shift: TShiftState; X,
      Y: Integer);
    procedure Label3MouseMove(Sender: TObject; Shift: TShiftState; X,
      Y: Integer);
    procedure Label4MouseMove(Sender: TObject; Shift: TShiftState; X,
      Y: Integer);
    procedure FormMouseMove(Sender: TObject; Shift: TShiftState; X,
      Y: Integer);
    procedure FormCreate(Sender: TObject);
    procedure Label1Click(Sender: TObject);
    procedure Label2Click(Sender: TObject);
    procedure Label3Click(Sender: TObject);
    procedure Label4Click(Sender: TObject);
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
    procedure MediaPlayer2Notify(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;
  cdir:string;

implementation

{$R *.dfm}

procedure TForm1.Label1MouseMove(Sender: TObject; Shift: TShiftState; X,
  Y: Integer);
begin
   Label1.Transparent :=False;
end;

procedure TForm1.Label2MouseMove(Sender: TObject; Shift: TShiftState; X,
  Y: Integer);
begin
   Label2.Transparent :=False;
end;

procedure TForm1.Label3MouseMove(Sender: TObject; Shift: TShiftState; X,
  Y: Integer);
begin
   Label3.Transparent :=False;
end;

procedure TForm1.Label4MouseMove(Sender: TObject; Shift: TShiftState; X,
  Y: Integer);
begin
   Label4.Transparent :=False;
end;

procedure TForm1.FormMouseMove(Sender: TObject; Shift: TShiftState; X,
  Y: Integer);
begin
   Label1.Transparent :=True;
   Label2.Transparent :=True;
   Label3.Transparent :=True;
   Label4.Transparent :=True;
end;

procedure TForm1.FormCreate(Sender: TObject);


begin
   getdir(0,Cdir);
   mediaplayer2.Notify :=true    ;
   mediaplayer2.Filename:=cdir+'\1.mid';
   mediaplayer2.Open ;
   mediaplayer2.Play ;

 end;


procedure TForm1.Label1Click(Sender: TObject);
begin
   MediaPlayer1.Close ;
   mediaplayer1.FileName:=cdir+'\1.wav';
   mediaplayer1.open;
   mediaplayer1.play;
end;

procedure TForm1.Label2Click(Sender: TObject);
begin
   MediaPlayer1.Close ;
   mediaplayer1.FileName:=cdir+'\2.wav';
   mediaplayer1.open;
   mediaplayer1.play;
end;

procedure TForm1.Label3Click(Sender: TObject);
begin
   MediaPlayer1.Close ;
   mediaplayer1.FileName:=cdir+'\3.wav';
   mediaplayer1.open;
   mediaplayer1.play;
end;

procedure TForm1.Label4Click(Sender: TObject);
begin
   MediaPlayer1.Close ;
   mediaplayer1.FileName:=cdir+'\4.wav';
   mediaplayer1.open;
   mediaplayer1.play;
end;

procedure TForm1.Button1Click(Sender: TObject);
begin
   mediaplayer1.Close ;
   application.Terminate ;
end;

procedure TForm1.Button2Click(Sender: TObject);
begin
  Opendialog1.Execute ;
  mediaplayer2.Close ;
  if (length(Opendialog1.FileName )<>0)  then
     mediaplayer2.Filename:=Opendialog1.FILENAME;
  Mediaplayer2.Open;
   mediaplayer2.Play;

end;

procedure TForm1.MediaPlayer2Notify(Sender: TObject);
begin
     if MediaPlayer2.NotifyValue =nvSuccessful then
       begin
          {mediaplayer2.Close ;}
          MediaPlayer2.Position :=0;
          MediaPlayer2.Notify :=True;
          Mediaplayer2.Play;
       end;
end;

end.