Stopping cursor blink in ttk widgets

Hi,

I'm one of a substantial minority of people who can't work with
blinking cursors.*

This is one reason why I switched to using Linux although Windows (but
not Mac OS X) now (since 2000) supports switching off cursor blink.

For Tcl/Tk applications I generally have to edit the source code on
Windows; but for Linux these lines in my .Xdefaults file are
sufficient for all the Tcl/Tk applications I've ever used:
*insertofftime: 0
*insertOffTime: 0

This has worked great for years but does not work with the ttk
widgets. For example, the Tk entry widget has the -insertOffTime
option, but the ttk::entry widget does not.

This means that right now, I can't create or use applications that use
ttk widgets, which is very disappointing.

Is there some way to stop cursor blink in the ttk widgets?

Thanks!

* http://www.jurta.org/en/prog/noblink