[윈도우즈 API] 데스크탑의 현재 커서위치의 타이틀명과 클래스명 구하기

unit Unit1;

interface

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

type
  TForm1 = class(TForm)
    Label1: TLabel;
    Label2: TLabel;
    Label3: TLabel;
    Timer1: TTimer;
    procedure FormCreate(Sender: TObject);
    procedure Timer1Timer(Sender: TObject);
  private
    { Private declarations }
    procedure ShowHwndAndClassName(CrPos: TPoint);
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation
{$R *.dfm}

procedure TForm1.ShowHwndAndClassName(CrPos: TPoint);
var
  hWnd: THandle;
  aName,
  Text :  array [0..255] of char;
begin
  hWnd := WindowFromPoint(CrPos);
  Label1.Caption := 'Handle :  ' + IntToStr(hWnd);

  if boolean(GetClassName(hWnd, aName, 256)) then
    Label2.Caption := 'ClassName :  ' + string(aName)
  else
    Label2.Caption := 'ClassName :  not found';
  SendMessage(hWnd, WM_GETTEXT, SizeOf(Text), integer(@Text));
  Label3.Caption := 'Text :' + Text;
end;

procedure TForm1.FormCreate(Sender: TObject);
begin
  Form1.FormStyle := fsStayOnTop;
  Timer1.Enabled  := False;
  Timer1.Interval := 50;
  Timer1.Enabled  := True;
end;

procedure TForm1.Timer1Timer(Sender: TObject);
var
  rPos: TPoint;
begin
  if boolean(GetCursorPos(rPos)) then
    ShowHwndAndClassName(rPos);
end;

end.