Hello! The class "Gtk::CheckButton" provides the feature to display an intermediate status (by the interface "gtk_toggle_button_set_inconsistent"), doesn't it? http://developer.gnome.org/gtk3/3.2/GtkToggleButton.html#gtk-toggle-button-set-inconsistent http://developer.gnome.org/gtkmm/3.2/classGtk_1_1CheckButton.html#_details
I would like to know the recommend way to represent unknown values for model attributes when it seems that a member function like "Gtk::TreeView::append_column" does not support the use of three-valued logic directly. http://developer.gnome.org/gtkmm/3.2/classGtk_1_1TreeView.html#a0253a5477ce006bf84fae8eb205efc73 http://en.wikipedia.org/wiki/Three-valued_logic#Representation_of_values How do you store a "NULL" (SQL) for a model attribute with a data type like "bool" and update its visual appearance accordingly? Regards, Markus _______________________________________________ gtkmm-list mailing list [email protected] http://mail.gnome.org/mailman/listinfo/gtkmm-list
