1. added wxEvtHandler::SafelyProcessEvent() and wxWindow::HandleWindowEvent() to correctly handle exceptions in even handlers in wxGTK

2. use HandleWindowEvent() everywhere as more obvious and convenient shortcut for GetEventHandler()->ProcessEvent(); also for consistency with wxGTK where it's required

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@50329 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/dfb/nonownedwnd.cpp

@@ -228,7 +228,7 @@ bool wxNonOwnedWindow::Show(bool show)
         m_sizeSet = true;
         wxSizeEvent event(GetSize(), GetId());
         event.SetEventObject(this);
-        GetEventHandler()->ProcessEvent(event);
+        HandleWindowEvent(event);
     }
 
     // make sure the window is fully painted, with all pending updates, before