Sounds good. I will wait till #21587 and create a small patch afterwards.
Thanks!

On Tue, Jul 22, 2014 at 9:33 PM, Terry J. Reedy <report@bugs.python.org>
wrote:

>
> Terry J. Reedy added the comment:
>
> On windows, new patch gives this:
> Traceback (most recent call last):
>   File "F:\Python\dev\4\py34\Lib\turtledemo\__main__.py", line 295, in
> <module>
>     demo = DemoWindow()
>   File "F:\Python\dev\4\py34\Lib\turtledemo\__main__.py", line 73, in
> __init__
>     graph_frame = self.makeGraphFrame(pane)
>   File "F:\Python\dev\4\py34\Lib\turtledemo\__main__.py", line 115, in
> makeGraphFrame
>     self._makeBindings(turtle._Screen._canvas._rootwindow)
>   File "F:\Python\dev\4\py34\Lib\turtledemo\__main__.py", line 130, in
> _makeBindings
>     root_window.bind_all('<%s-minus>' % shortcut, self._decreaseFont)
>   File "F:\Python\dev\4\py34\lib\tkinter\__init__.py", line 1049, in
> bind_all
>     return self._bind(('bind', 'all'), sequence, func, add, 0)
>   File "F:\Python\dev\4\py34\lib\tkinter\__init__.py", line 992, in _bind
>     self.tk.call(what + (sequence, cmd))
> _tkinter.TclError: bad event type or keysym "Ctrl"
>
> /Ctrl/Control in "shortcut = 'Control" and demo runs.
>
>         root_window.bind_all('<%s-minus>' % shortcut, self._decreaseFont)
>         root_window.bind_all('<%s-=>' % shortcut, self._increaseFont)
>
> ^- shrinks on -_ key and num keypad.
> &+ enlarges on =+ key but not num keypad.  Fix by adding
>         root_window.bind_all('<%s-plus>' % shortcut, self._increaseFont)
>
> ^wheel either way maked giant type -- evt.delta on my machine is +-120!
>         self.txtfont['size'] += evt.delta // 120
> works like expected. And please spell out 'event'.
>
> Out general policy is one patch per issue. The one for #21587 already
> fixes two issues. After we finish that (see questions), produce a small
> patch for this.
>
> ----------
>
> _______________________________________
> Python tracker <report@bugs.python.org>
> <http://bugs.python.org/issue21933>
> _______________________________________
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