Re: CToolTipCtrl & Property Pages

If you use your Property Pages in modeless mode, than you need to do a
HOOK. The PreTranslateMessage() doesn't work in this scenario.

HHOOK i_hHook = NULL;
YourPropertySheet* i_PropSheet = NULL;

// Hook procedure for WH_GETMESSAGE hook type.
LRESULT CALLBACK hook_GetMessageProc(int nCode, WPARAM wParam, LPARAM
lParam)
{
  // Switch the module state for the correct handle to be used.
  AFX_MANAGE_STATE(AfxGetStaticModuleState());

  // If this is a keystrokes message, translate it in controls'
  // PreTranslateMessage().
  LPMSG lpMsg = (LPMSG) lParam;
  if( (nCode >= 0) &&
    PM_REMOVE == wParam &&
    //(lpMsg->message >= WM_KEYFIRST && lpMsg->message <= WM_KEYLAST)
&&
    i_PropSheet &&
    i_PropSheet->PreTranslateMessage((LPMSG)lParam) )
  {
    // The value returned from this hookproc is ignored, and it cannot
    // be used to tell Windows the message has been handled. To avoid
    // further processing, convert the message to WM_NULL before
    // returning.
    lpMsg->message = WM_NULL;
    lpMsg->lParam = 0L;
    lpMsg->wParam = 0;
  }

  // Passes the hook information to the next hook procedure in
  // the current hook chain.
  return ::CallNextHookEx(i_hHook, nCode, wParam, lParam);
}

// in OnInitDialog() of your PropertySheet
{
  i_PropSheet = this;
  // Install the WH_GETMESSAGE hook function.
  i_hHook = ::SetWindowsHookEx(WH_GETMESSAGE,
                               pxGetMessageProc,
                               AfxGetInstanceHandle(),
                               GetCurrentThreadId());
                               ASSERT(i_hHook);
}

// in d-tor of you PropertySheet
{
  // Uninstall the WH_GETMESSAGE hook function.
  VERIFY(::UnhookWindowsHookEx(i_hHook));
}