使用delphi程序动态改变当前鼠标箭头的样式

简便的方法：

其实可以简化问题用TScreen对象的功能就可以了：
Screen.Cursor:=crHandPoint;

--------------------------------------------------------

较复杂的方式 使用API函数 和消息

用SetCursor要拦截WM_SETCURSOR以下是一个例子：
unit Unit1;

interface

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

type
TForm1 = class(TForm)
BtnEdit1: TBtnEdit;
BtnEdit2: TBtnEdit;
Edit1: TEdit;
SpeedButton1: TSpeedButton;
procedure SpeedButton1Click(Sender: TObject);
private
{ Private declarations }
ChangeCursor:boolean;
procedure WMSetCursor(var Msg:TMessage);message WM_SETCURSOR;
public
{ Public declarations }
end;

var
Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.SpeedButton1Click(Sender: TObject);
begin
ChangeCursor:=Not ChangeCursor;
end;

procedure TForm1.WMSetCursor(var Msg: TMessage);
begin
if ChangeCursor then
SetCursor(LoadCursor(0,IDC_HAND))
else
inherited;
end;

end.