1. don't modify the style unless something changed 2. use gtk_widget_modify_style instead of gtk_widget_set_style, the latter is not recommended by GTK+ developers git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@27784 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775