delphi向另一程序窗口某处发送鼠标事件所用的工具

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;
Label5: TLabel;
Label6: TLabel;
Label7: TLabel;
Label8: TLabel;
Label9: TLabel;
Label10: TLabel;
Label11: TLabel;
Label12: TLabel;
procedure Timer1Timer(Sender: TObject);

private
{ Private declarations }
public
{ Public declarations }
selectr:trect; //注意这里定义为保存选定窗体的左上角
end;

var
Form2: TForm2;

implementation

{$R *.dfm}

procedure TForm2.Timer1Timer(Sender: TObject);

var
p: TPoint;
h: HWND;
r:trect;
begin
GetCursorPos(p);
label6.Caption:=format('x: %d, y: %d',[p.x,p.y]); //鼠标在屏幕绝对位置
h := WindowFromPoint(p);
GetWindowRect(h,r);//得到窗口的左上角坐标

if GetAsyncKeyState(VK_LButton)<>0 then //按下鼠标左键，记下所选的窗体左上角
begin
selectr:=r;
label11.Caption:=format('x: %d, y: %d',[r.left,r.top]);
end;

label4.Caption:=format('x: %d, y: %d',[r.left,r.top]); //当前鼠标位置窗体的左上角
label8.Caption:=format('x: %d, y: %d',[p.x-selectr.left,p.y-selectr.top]);
//label8内为发送鼠标事件所用数据
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.

http://cy03wqh.blog.163.com/blog/static/3678030220108592514544/