Re: Catch WM_SIZE

Hi,

The parent need to know when this child control change size because it must
be realign on CENTER of the dialog.

I find a working solution :

LRESULT CALLBACK MyControlCtrlNewWndProc(HWND hWnd,UINT Message, WPARAM
wParam, LPARAM lParam);
LONG MyControlOldWndProc;

BOOL CMyDialog::OnInitDialog()
{
   CDialog::OnInitDialog();

   m_MyControlCreate( NULL, _T(""), WS_VISIBLE, CRect(10, 10, 0, 0), this, 1
);

   MyControlOldWndProc = SetWindowLong(m_MyControl, GWL_WNDPROC,
(long)MyControlCtrlNewWndProc);
   ...
}

LRESULT CALLBACK MyControlCtrlNewWndProc(HWND hWnd, UINT Message, WPARAM
wParam, LPARAM lParam)
{
  switch(Message)
  {
    case WM_SIZE :
    LRESULT result = CallWindowProc( (WNDPROC)TrappeOldWndProc, hWnd, NULL,
wParam, lParam);

               // Do realign stuff...

    return result;
    break;
  }
  
  // Call default function
  return CallWindowProc((WNDPROC)MyControlOldWndProc, hWnd, Message, wParam,
lParam);
}

What are you thinking of this solution ?

"Doug Harrison [MVP]" wrote: