delphi 获取鼠标指向窗口的位置及鼠标在窗口内的相对位置坐标

delphi 获取鼠标指向窗口的位置及鼠标在窗口内的相对位置坐标

unit Unit2;

interface

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

type
TForm2 = class(TForm)
Timer1: TTimer;
Label1: TLabel;
Label2: TLabel;
Label3: TLabel;
Label4: TLabel;
procedure Timer1Timer(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;

var
Form2: TForm2;

implementation

{$R *.dfm}

procedure TForm2.Timer1Timer(Sender: TObject);

var
p: TPoint;
h: HWND;
r:trect;
begin
GetCursorPos(p);
h := WindowFromPoint(p);
GetWindowRect(h,r);//得到窗口的左上角坐标
label4.Caption:=format('x: %d, y: %d',[r.left,r.top]);
Windows.ScreenToClient(h, p);
label1.Caption:=format('x: %d, y: %d',[p.X,p.y]);//鼠标在窗口里的相对位置坐标

end;

end.