Hold a reference on m_widget for the life of the associated wxWindow object.

This allows removing some ugly hacks, and leaking of GtkWidgets by wxNotebook.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@55288 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/gtk/calctrl.cpp

@@ -88,6 +88,7 @@ bool wxGtkCalendarCtrl::Create(wxWindow *parent,
     }
 
     m_widget = gtk_calendar_new();
+    g_object_ref(m_widget);
     SetDate(date.IsValid() ? date : wxDateTime::Today());
 
     if (style & wxCAL_NO_MONTH_CHANGE)