Question

我不明白为什么这段代码不起作用：

import tkinter

class Application ():

def__init__(self):

        self.master = tkinter.Tk()
        self.master.bind("<Enter>", self.quit)
        self.master.mainloop()

    def quit (self):
        self.master.destroy()

my_app = Application()

我一直收到错误：“quit（）需要1个位置参数，但是给出了2个”。有没有办法关闭绑定密钥的主Tkinter窗口？

谢谢

Answer 1

只需将另一个变量添加到quit方法（＆＃34; i＆＃34;，＆＃34; n＆＃34;等），当您将事件绑定到方法时，该方法必须能够处理将事件称为参数。

import tkinter

class Application ():

    def __ init __ (self):

       self.master = tkinter.Tk()
       self.master.bind("<Enter>", self.quit)
       self.master.mainloop()

    def quit (self,n):
       self.master.destroy()

#notice that the n variable doesnt really do anything other than "handling" of the event, so when
#it gets 2 arguments it can handle 2 parameters without giving an exception
#the (old) method only had space for 1 argument (self), but the moment you "bind" a button or event
#the method MUST be able to handle such information

my_app = Application()

关闭主Tkinter窗口绑定一个键

1 个答案: