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.
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<http://bugs.python.org/issue21933>
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