[Tkinter-discuss] implementation change to simplify Tkinter event loop and threading issues

[Cameron Laird]

On Wed, Jun 06, 2018 at 12:55:25PM -0700, Tim Jones wrote:
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> > On Jun 6, 2018, at 11:56 AM, Mark Roseman <mark at markroseman.com> wrote:
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> > The best part of this, at least as far as stability goes, is that Tcl controls the timing of the calls into Tkinter, so that it will only make them when it’s “safe” to do so, from a thread it expects to do so from, etc. Given that Tcl has the stricter restrictions on what can be called when and from where, this seems like a win. On the Tkinter side, it never has to worry about if it’s safe to call into Tcl.
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> > (The one exception to this is probably application startup, i.e. before we hit mainloop, where Tkinter would just call directly into Tcl. It may be a reasonable restriction to say that you have to make Tkinter calls from the originating thread if they’re made before you hit mainloop).
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> > To me this appears like it should be feasible. Any thoughts?
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> > Mark
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> Such a change alone would bring me back to Python and TKInter for UI apps.
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Me, too!

That is, this change sounds to me:
* feasible
* overdue
* welcome.

I only wish I had availability to offer to help.  I actually was working
on the Tcl event loop in '96-97 ...