ulis a(Huge)ListBox is a pure Tcl megawidget that is a direct replacement for the Tk 8.4 listbox.
It adds fonctionalities as:
So it's possible to display lists with radio buttons, check boxes, hierachical views, files trees, the list of the fonts with its own font...
But its main interest is to accept a huge set of items without time or memory penalty (with 1,000,000 items it's 1,000 times faster to load, scroll or resize than the standard listbox).
doc & dowload: http://perso.wanadoo.fr/maurice.ulis/tcl/Hugelist
See also