Re: how to post message to a button which is being created

Hi,All
      I get the button Hwnd which is being created via hook. I want to
send message to this button.

   CButton *btn=new CButton();
   btn->Attach(hWnd);
   BOOL bs=btn->SendMessage(BN_CLICKED,0,0);
   if (bs) TRACE("send ok");

   BOOL bp=btn->PostMessage(BN_CLICKED,0,0);
   if (bp) TRACE("post ok");

post message is ok ,sendmessage is failed. I know the reason is the
creation of the button is not finished. now I want to add waiting time
when post message to the creating button .

My question is how to set additional message ( wParam and lParam ) in
PostMessage( UINT message, WPARAM wParam = 0, LPARAM lParam = 0 );