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/gtk/fontpicker.cpp

@@ -42,7 +42,7 @@ static void gtk_fontbutton_setfont_callback(GtkFontButton *widget,
 
     // fire the colour-changed event
     wxFontPickerEvent event(p, p->GetId(), p->GetSelectedFont());
-    p->GetEventHandler()->ProcessEvent(event);
+    p->HandleWindowEvent(event);
 }
 }