I have some code in delphi that clicks a button in a window.The way it does that: it gets the hwnd of the window,then it enums all the childs,if any of them has text with "ok"(the button i want),it sends some messages.Full code:

function EnumChildProc_Register(AHWND: HWND; AParam: LParam): Boolean; stdcall;
const
  BUFFER_SIZE = 4096;
var
  text  : array[0..BUFFER_SIZE - 1] of Char;
  pparam: pointer;
  res   : DWORD;
begin
  pparam := pointer(AParam);
  SendMessageTimeout(AHWND, WM_GETTEXT, BUFFER_SIZE, NativeUint(@text[0]), SMTO_ABORTIFHUNG, 50, @res);
  if String(text) = 'OK' then
  begin
    PostMessage(AHWND, WM_KEYDOWN, VK_RETURN, 0);
    Sleep(10);
    PostMessage(AHWND, WM_KEYUP, VK_RETURN, 0);
    Boolean(pparam^) := FALSE;
  end;

  result := Boolean(pparam^);
end;

The big problem is,those 2 post messages do nothing in win32.I tested the code,and the button is not clicked.How could it work in delphi,and in c++ not?

Still...I'm amaazed at the fact that some code can do a thing in delphi,and the same code,do nothing in c++...