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/fontpicker.cpp

@@ -66,6 +66,7 @@ bool wxFontButton::Create( wxWindow *parent, wxWindowID id,
     }
 
     m_widget = gtk_font_button_new();
+    g_object_ref(m_widget);
 
     // set initial font
     m_selectedFont = initial.IsOk() ? initial : *wxNORMAL_FONT;