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/gtk1/checkbox.cpp

@@ -50,7 +50,7 @@ static void gtk_checkbox_toggled_callback(GtkWidget *WXUNUSED(widget),
     wxCommandEvent event(wxEVT_COMMAND_CHECKBOX_CLICKED, cb->GetId());
     event.SetInt(cb->GetValue());
     event.SetEventObject(cb);
-    cb->GetEventHandler()->ProcessEvent(event);
+    cb->HandleWindowEvent(event);
 }
 }