tkXwin

What: tkXwin
Where: http://beepcore-tcl.sourceforge.net/ 
Description: Support for user idle time tracking for Tk in X Window.
Updated: ca 2002
Contact: Marshall Rose <mrose at dbc.mtview.ca.us>
          (But seems unmaintained)
Source: http://beepcore-tcl.sourceforge.net/tkXwin-1.0.tgz 

This package provides user idle time reporting in Tk under X Window. Confirmed to work on all major contemporary Linux systems to this date (2008).

Note that Tk since version 8.5 has built-in support for user idle time reporting via its tk inactive command, so consider using this library only if you must support Tk < 8.5.

Works like tk inactive -- to get the user's idle time, invoke:

tkXwin::idletime

See also

• tk inactive — Tk 8.5 builtin.
• tkinactive — Support for idle time reporting in older Tk (both X Window and modern NT-based Windows systems).
• tclWinidle — Support for idle time reporting in older Tk (all versions of Windows).