Hello, Gtk_Button_New_With_Label shouldn’t be just New_With_Label as it is inside package GTK.Button? Or else Gtk_New_With_Label as Gtk_New_With_Mnemonic. Same for Gtk_Button_New_From_Stock and Gtk_Button_New_With_Mnemonic. Other packages may be in the same case. Though, renaming is always a pain with legacy code. Regards, Pascal. http://blady.pagesperso-orange.fr