Fórum Capturar Handle, Classe e Caption da janela filho #463479

unit Unit1;

interface

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

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

var
  Form1: TForm1;

implementation

{$R *.dfm}


procedure TForm1.Timer1Timer(Sender: TObject);
var 
   buffer : String; 
   hWnd: THandle; 
   pt : TPoint; 
   txSize : Integer; 
begin 
   GetCursorPos(pt); // pega a posição do mouse 
   hWnd := WindowFromPoint(pt); // pega o Handle 
   SetLength(buffer, 256); 
   if (GetClassName(hWnd, pchar(buffer), 256) = 0) then buffer := 'nil';
   Label1.Caption := 'Handle = '+IntToStr(hWnd)+' Class = '+buffer;
   txSize := SendMessage(hWnd, WM_GETTEXTLENGTH, 0, 0); 
   SetLength(buffer, txSize); 
   SendMessage(hWnd, WM_GETTEXT, txSize + 1, longint(buffer));
  Label2.Caption := buffer;
end;

end.