TES is [David Gravereaux]'s Windows-specific
Tcl-interpreter-in-C++-application embedding experiment.

He maintains it at http://sourceforge.net/projects/tomasoft/ .

The acronym stands for ''Tcl Event System''.

Read the docs for it @ http://tomasoft.cvs.sourceforge.net/*checkout*/tomasoft/tes/OSCON2K%2B1_TclTrack.html?content-type=text%2Fhtml

download: [http://prdownloads.sourceforge.net/tomasoft/tes-1.4.zip?download]

In a nutshell, TES is a way to separate the Tcl event loop from interactions with the Windows message pump of the application Tcl is embedded into.  It does this by running Tcl in a separate thread and provides the way to ''post'' Tcl jobs.  This is a perfect solution for running Tk, which requires an active event loop.  It avoids the need to merge event loops or use flushing by doing a sledgehammer approach instead.

Or another way to look at, TES allows for modular execution of Tcl, the ''component'', which might be comparable to Microsoft's [COM].