Hi, ALL, This link https://developer.gnome.org/gtk3/stable/GtkToolbar.html#GtkToolbar-popup-context-menu states that the parameter "button" can be "-1". What is the scenario when this occurs, i.e. it should be the button number that was clicked IIUC? Thank you for clarification. _______________________________________________ gtk-list mailing list gtk-list@xxxxxxxxx https://mail.gnome.org/mailman/listinfo/gtk-list