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/dirdlg.cpp

@@ -120,6 +120,7 @@ wxDirDialog::wxDirDialog(wxWindow* parent,
                    GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
                    GTK_STOCK_OPEN, GTK_RESPONSE_ACCEPT,
                    NULL);
+    g_object_ref(m_widget);
 
     gtk_dialog_set_default_response(GTK_DIALOG(m_widget), GTK_RESPONSE_ACCEPT);