tk_popup is Tk's method of posting a popup menu. http://www.purl.org/tcl/home/man/tcl8.4/TkCmd/popup.html Popups act funny on different platforms. Learn how to fix that in the [Pragmatic use of Pernicious Popups]. ---- [Tk syntax help] - [Arts and crafts of Tcl-Tk programming] - [Category Command]