本文介绍了在 Python Tkinter 中绑定 Ctrl (-)的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我有一个带有文本小部件的应用程序,我希望当用户按下 Control 键和减号键 (-) 时我的字体变小.
I have an application with a Text widget, and I want my font to get smaller when the user presses the Control key and the minus key (-).
代码
self.bind_all("<Control-=>", self.increaseFont)
当用户按下控制键和等号键时,似乎可以很好地增加字体,但是行
seems to work fine for getting the font to increase when the user presses the control key and the equals key, but the line
self.bind_all("<Control-->", self.decreaseFont)
似乎不起作用.
当我尝试运行它时,它给了我一个运行时错误:
When I try to run it, it gives me a runtime error:
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
推荐答案
试试 self.bind_all("", self.decreaseFont)
.
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