mosa123 发表于 2021-8-15 17:03:47

class Radiobutton 放在类中出错

from tkinter import *

class Speed:
    def __init__(self,root):
      speedFrame = Frame(root)
      speed = IntVar()
      speed_F = Radiobutton(speedFrame, text='Fast', variable=speed, value=1)
      speed_S = Radiobutton(speedFrame, text='Slow', variable=speed, value=0)
      speed_F.pack()
      speed_S.pack()
      speedFrame.pack()

root = Tk()

speed = Speed(root)

speedFrame = Frame(root)
speed = IntVar()
speed_F = Radiobutton(speedFrame, text='Fast2', variable=speed, value=1)
speed_S = Radiobutton(speedFrame, text='Slow2', variable=speed, value=0)
speed_F.pack()
speed_S.pack()
speedFrame.pack()

mainloop()



Radiobutton写到class中就出错了，（1）鼠标滑过时会被选中，（2）不能显示默认项。求教这是为什么？

Pliosauroidea 发表于 2021-8-15 17:50:16


from tkinter import *

class Speed:
    def __init__(self,root):
      speedFrame = Frame(root)
      self.speed = IntVar()
      self.speed_F = Radiobutton(speedFrame, text='Fast', variable=speed, value=1)
      self.speed_S = Radiobutton(speedFrame, text='Slow', variable=speed, value=0)
      self.speed_F.pack()
      self.speed_S.pack()
      speedFrame.pack()

root = Tk()

speed = Speed(root)

speedFrame = Frame(root)
speed = IntVar()
speed_F = Radiobutton(speedFrame, text='Fast2', variable=speed, value=1)
speed_S = Radiobutton(speedFrame, text='Slow2', variable=speed, value=0)
speed_F.pack()
speed_S.pack()
speedFrame.pack()

mainloop()

Twilight6 发表于 2021-8-16 07:13:30


类中 speed 重新赋值导致触发屏蔽机制，试试这样：

from tkinter import *

class Speed:
    def __init__(self,root):
      global speed
      speedFrame = Frame(root)
      speed2 = IntVar()
      speed_F = Radiobutton(speedFrame, text='Fast', variable=speed2, value=1)
      speed_S = Radiobutton(speedFrame, text='Slow', variable=speed2, value=0)
      speed_F.pack()
      speed_S.pack()
      speedFrame.pack()

root = Tk()

speed = Speed(root)

speedFrame = Frame(root)
speed1 = IntVar()
speed_F = Radiobutton(speedFrame, text='Fast2', variable=speed1, value=1)
speed_S = Radiobutton(speedFrame, text='Slow2', variable=speed1, value=0)
speed_F.pack()
speed_S.pack()
speedFrame.pack()

mainloop()

或者在 __init__ 下 添加一行 global speed

mosa123 发表于 2021-8-20 21:13:14

贴上运行正确的代码

from tkinter import *

class Speed:
    def __init__(self,root):
      root.speedFrame = Frame(root)
      self.speed = IntVar()
      speed_F = Radiobutton(root.speedFrame, text='Fast', variable=self.speed, value=1)
      speed_S = Radiobutton(root.speedFrame, text='Slow', variable=self.speed, value=0)
      speed_F.pack()
      speed_S.pack()
      root.speedFrame.pack()

root = Tk()
speed = Speed(root)


mainloop()

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