1
我有一个带有Text小部件的应用程序,当用户按下Control键和减号键( - )时,我希望字体变小。在Python中绑定Ctrl( - )Tkinter
代码
self.bind_all("<Control-=>", self.increaseFont)
似乎对获得的字体,当用户按下控制键和等号键增加做工精细,但行
self.bind_all("<Control-->", self.decreaseFont)
似乎不工作。
当我尝试运行它,它给了我一个运行时错误:
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