G'day Sandy,

I take it you currently have Tk widgets you've written yourself and you want to translate them into something else; however, I don't really know what you mean by "perl Tcl/Tk". Perhaps Tcl::Tk, Tkx, or similar?

It's also unclear whether you're looking for online tutorials or books to buy.

Anyway, if you could clarify those points, it would help. In the meantime, here's a few suggestions.

• I've never used Tcl::Tk; but I see from its doco, discussions of both "Perl/Tk" and "Tcl/Tk": maybe something useful there. I also noted in its MANIFEST what appears to be the same filenames (tk-demos/*) as Tk's widget demo: a comparison of the two might help.
• I have used Tkx so, if that's what you're using, I may be able to provide more direct help. Its doco has links to tutorials. One in particular, TkDocs - Tk Tutorial, shows code for creating the same widgets using Perl, Tcl, Ruby and Python: again, a comparison may be fruitful.
• ActiveState ActiveTcl provides a lot of documentation; although not too much in the way of Tk tutorials (as far as I can see). I did find this useful when I was first getting to grips with Tkx.