confine pointer and keyboard events to a Tk window sub-tree
The Byzi extension for Tk provides a simple means to block keyboard, button and pointer events from Tk widgets, while overriding the widget's cursor with a configurable busy cursor. The Byzi extension is based on the Tk 8.6 busy command sources.
Homepage: http://github.com/aryler/Byzi
Maintainer: Stuart Cassoff <stwo@users.sourceforge.net>