unit teach;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, Buttons, ComCtrls;

type
  TForm3 = class(TForm)
    SpeedButton1: TSpeedButton;
    StatusBar1: TStatusBar;
    SpeedButton2: TSpeedButton;
    SpeedButton3: TSpeedButton;
    SpeedButton4: TSpeedButton;
    SpeedButton5: TSpeedButton;
    procedure SpeedButton1Click(Sender: TObject);
    procedure SpeedButton2Click(Sender: TObject);
    procedure SpeedButton3Click(Sender: TObject);
    procedure SpeedButton4Click(Sender: TObject);
    procedure SpeedButton5Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form3: TForm3;

implementation

uses teacherlogin, studentlogin, jiaowuke, student, jiaohelp;

{$R *.dfm}

procedure TForm3.SpeedButton1Click(Sender: TObject);
begin
     form3.Hide;
     form8.show;
end;

procedure TForm3.SpeedButton2Click(Sender: TObject);
begin
     form3.Hide;
     form9.show;
end;

procedure TForm3.SpeedButton3Click(Sender: TObject);
begin
    form3.Hide;
    form10.show;
end;

procedure TForm3.SpeedButton4Click(Sender: TObject);
begin
     form3.Hide;
     form2.show;
end;

procedure TForm3.SpeedButton5Click(Sender: TObject);
begin
      form15.show;
end;

end.