Checkbutton 总是返回 True

Question

同志们， 我在使用 tkinter 库时遇到了问题。 这是一个代码：

from tkinter import *
root = Tk()
class Doc_Search:      
    def __init__(self, master = None):
        self.var6 = IntVar()
        self.var7 = IntVar()
#Winglets checkbuttons
        self.C2 = Checkbutton(self.labelframeA, variable = self.var6, offvalue = 0, onvalue = 1, command = self.onWinglets)
        self.C2.grid(row=2, column=3, sticky = 'W')

        self.R9 = Radiobutton(self.labelframeA, text = "Blended", state=DISABLED, variable = self.var7, value = 1, command = self.Wing_key)
        self.R9.grid(row=3, column=3, sticky='W')

        self.R10 = Radiobutton(self.labelframeA, text = "SSW", state=DISABLED, variable = self.var7, value = 2, command = self.Wing_key)
        self.R10.grid(row=4, column=3, sticky='W'+'N')

    def onWinglets(self):
               self.key5 = self.var6.get()
               if self.key5:
                  self.R9['state']='normal'
                  self.R10['state']='normal'
                  return True
               else:
                  self.var7.set(0)
                  self.R9['state']='disabled'
                  self.R10['state']='disabled'
                  return False
        myapp = Doc_Search(root)
        root.mainloop()

下一个函数，取决于onWinglets(self)

    def Wing_key(self): 
        if self.onWinglets:

就像onWinglets(self) 总是返回True 一样工作（不管Checkbutton 是否被按下）。这有点奇怪。谁能帮助解决这个问题？非常感谢！

PS：我尝试检查onWinglets(self)函数的性能为：

z = myapp.onWinglets()
print(z)

输出如下：

Traceback (most recent call last):
  File "windows_tk_1.py", line 313, in <module>
    z = myapp.onWinglets()
  File "windows_tk_1.py", line 220, in onWinglets
    self.R9['state']='normal'
  File "/usr/lib/python3.5/tkinter/__init__.py", line 1340, in __setitem__
    self.configure({key: value})
  File "/usr/lib/python3.5/tkinter/__init__.py", line 1333, in configure
    return self._configure('configure', cnf, kw)
  File "/usr/lib/python3.5/tkinter/__init__.py", line 1324, in _configure
    self.tk.call(_flatten((self._w, cmd)) + self._options(cnf))
_tkinter.TclError: invalid command name ".139943983318912.139943983320312"

感谢大家的帮助！

Answer 1

尝试将您的条件重写为：

if self.var6.get() == 1 :

也许您误解了self.key5 = self.var6.get() 不会将IntVar() 值转换为布尔指标。直接测试var6.get()即可。

随意将测试值更改为0。