Hi, I have an application, where I get the warning: Gtk-CRITICAL **:gtk_widget_get_preferred_width_for_height: assertion 'height >= 0' failed and some times the widgets get wrong widths. It comes from a Gtk::ComboBoxText that is in this widget hierarchy (from the ComboBoxText the parents up to the main window): "Gtk::Box" "Gtk::Box" "Gtk::Box" "Gtk::Frame" "Gtk::Revealer" "Gtk::Box" "Gtk::Viewport" "Gtk::ScrolledWindow" "Gtk::Box" "Gtk::Box" "Gtk::Window" Unless the ComboBox isn't shown, the warning does not appear. I do not change any widget size requisitions by hand in the complete GUI. What is so special with the combo box and what do I have to honor if I use them? I've read the docs about "width for hight management" but from my point of view it only affects own container implementations, which I don't use. I use gtk 3.14.5 with ruby-gtk from git/master. I'm very obliged for any hints! detlef _______________________________________________ gtk-list mailing list gtk-list@xxxxxxxxx https://mail.gnome.org/mailman/listinfo/gtk-list