判断按钮单击事件

Question

做一个全局变量在form1和form2之间传递一下
如： form1中有一个tt: booleanbutton1的click里面置为truebutton2中判断一下

Answer 1

unit Unit1;interfaceuses
  Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
  StdCtrls;type
  TForm1 = class(TForm)
    Button1: TButton;
    procedure FormCreate(Sender: TObject);
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;
var
  Form1: TForm1;
  tt: Boolean;implementation{$R *.DFM}procedure TForm1.FormCreate(Sender: TObject);
begin
  tt:=False;
end;procedure TForm1.Button1Click(Sender: TObject);
begin
  tt:=True;
end;end.unit Unit2;interfaceuses
  Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
  StdCtrls;type
  TForm2 = class(TForm)
    Button1: TButton;
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;var
  Form2: TForm2;implementation
uses unit1;
{$R *.DFM}procedure TForm2.Button1Click(Sender: TObject);
begin
  if tt then
  begin
    //显示FORM3窗体
  end
  else
  begin
    //退出此系统
  end
end;end.