This page is about RenderTk, a package that tries to "emulate" a *tiny* part of Tk, and "render" it as HTML. Emphasis should be given to "tiny" (much of Tk is not supported), and "render" (the Tk UI is converted in HTML tags, the resulting HTML does not function as the original Tk code. It only "draws" the Tk UI).
I needed a way to "convert" a Tk UI into an HTML UI (using AngularJS). I would like very much to use WubTk, but I had the following limitations:
Initially, I tried to modify WubTk, in order to remove dependencies to Wub and Tk, and I ended writting RenderTk. So, RenderTk was inspired by WubTk, and to some extend it borrowed its implementation, as it started from the WubTk implementation.
RenderTk tries to mimic Tk as much as possible. This means, that I didn't like the fact that WubTk used "grid" in a strange way, and you have to use cell coordinates to all widgets. This means that you can never use the same Tk code. So, I desided that the grid command must be emulated, and I did it: RenderTk has a (partial) implementation of grid in Tcl. I did this by translating the C code from Tk internals into Tcl. Maybe not the fasted approach, but for sure the most compatible... :-)
Almost everything. As a start, interaction of any kind with the rendered UI.