！！！请问怎样把鼠标控制在一个窗口之内？？？

Question

?

Answer 1

use shellapivar 
btScreen: TRect; 
begin 
btScreen := Rect(0, 0, Screen.Width, Screen.Height); 
ClipCursor(@btScreen); 
end;

Answer 2

var
  r: TRect;
begin
  r := Rect(0, 0, 100, 100);
  ClipCursor(@r);
end;

Answer 3

procedure TForm1.Button1Click(Sender: TObject);
var
  r: TRect;
begin
  GetWindowRect(Form1.Handle, r);
  ClipCursor(@r);
end;

Answer 4

在空白窗体上放一个PANEL和两个按钮，按钮一限制，按钮二取消：unit Unit1;interfaceuses
  Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
  StdCtrls, Grids, DBGrids, Db, ExtCtrls;type
  TForm1 = class(TForm)
    Panel1: TPanel;
    Button1: TButton;
    Button2: TButton;
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;var
  Form1: TForm1;implementation{$R *.DFM}procedure TForm1.Button1Click(Sender: TObject);
var
  rt: Trect;
begin
  rt :=Panel1.BoundsRect;
  MapWindowPoints(handle, 0, rt, 3);
  ClipCursor(@rt); // 限制
end;
procedure TForm1.Button2Click(Sender: TObject);
var
  rtScreen: TRect;
begin
  rtScreen := Rect(0, 0, Screen.Width, Screen.Height);
  ClipCursor(@rtScreen);
end;end.