unit Unit1;

interface

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

type
  TForm1 = class(TForm)
    Button1: TButton;
    Button2: TButton;
    procedure Button1Click(Sender: TObject);
  private
    { Private-Deklarationen }
  public
    { Public-Deklarationen }
  end;

var
  Form1: TForm1;

var
  origMoveWindow: procedure (x: UINT;y: UINT; nWidth: UINT;nHeight: UINT;bRepaint: boolean); stdcall;
  newMoveWindow: procedure (x: UINT;y: UINT; nWidth: UINT;nHeight: UINT;bRepaint: boolean); stdcall;

implementation

{$R *.dfm}

procedure callback(x: UINT;y: UINT; nWidth: UINT;nHeight: UINT;bRepaint: boolean); stdcall;
begin
  ShowMessage(IntToStr(x)+'|'+IntToStr(y)+'|'+IntToStr(nWidth)+'|'+IntToStr(nHeight));
end;

procedure TForm1.Button1Click(Sender: TObject);
begin
  @origMoveWindow:=GetProcAddress(LoadLibrary('user32.dll'),'MoveWindow');

  uallHook.HookCode(@origMoveWindow,@callback,@newMoveWindow);
  MoveWindow(self.Handle,1,1,500,500,true); //hier

  uallHook.UnhookCode(@newMoveWindow);
end;

end.