GTK+ 2.17.10 is now the required version I've used all the GTK+ 2.18.* api available, still missing: GTK_WIDGET_UNSET_FLAGS (widget, GTK_TOPLEVEL); GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED); GTK_WIDGET_REALIZED () GTK_WIDGET_MAPPED () GTK_VIEWPORT ()->bin_window GTK_ENTRY ()->editing_canceled