我有一个带有文本小部件的应用程序,当用户按下控制键和减号键(-)时,我希望我的字体变小。在
代码
self.bind_all("<Control-=>", self.increaseFont)
当用户按下control键和equals键时,似乎可以很好地增加字体,但是
^{pr2}$似乎不起作用。在
当我尝试运行它时,它会给我一个运行时错误:
Traceback (most recent call last):
File "./mathEditor.py", line 122, in <module>
app = MathEditor(fileName = sys.argv[1])
File "./mathEditor.py", line 40, in __init__
self.bind_all("<Control-->", self.decreaseFont)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-tk/Tkinter.py", line 997, in bind_all
return self._bind(('bind', 'all'), sequence, func, add, 0)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-tk/Tkinter.py", line 940, in _bind
self.tk.call(what + (sequence, cmd))
_tkinter.TclError: no event type or button # or keysym
尝试
self.bind_all("<Control-minus>", self.decreaseFont)
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