選擇不同的單選按鈕時，如何去除第一個單選按鈕的效果？

我想為我的代碼組織 GUI，它有 2 個部分。I'm organizing it by adding Radiobuttons, where when one is selected, it displays "Section 1" only. 當另一個Radiobutton被選中時，它應該不顯示“Section 1”，只顯示“Section 2”。

這就是想法，一切進展順利，只是如果我更改Radiobutton選擇，它會顯示兩個部分。

我怎樣才能讓它一次只顯示一個？

這是一個可以運行的示例代碼：

from tkinter import *

def main():
    root = Tk()
    app = Window(root)
    root.mainloop()


class Window():
    def __init__(self, master):
        self.master=master
        self.master.title("Test")
        self.master.geometry('1000x700')

        self.Radio=Label (self.master, text="Select Method", bg='Lavender')
        self.RadioFrame=LabelFrame(self.master, width=230, height=150, labelwidget=self.Radio, bg='lavender')
        self.RadioFrame.place(x=200, y=35)

        selection = IntVar()
        selection.set(0)
        r1 = Radiobutton(self.RadioFrame, text="Option 1", variable=selection, value=1, command=lambda: Clicked(selection.get()), bg='lavender').pack()
        r2 = Radiobutton(self.RadioFrame, text="Option 2", variable=selection, value=2, command=lambda: Clicked(selection.get()), bg='lavender').pack()

        def Clicked(variable):

            if selection.get() ==1:
                self.label_1=Label (self.master, text="label 1", bg='lavender')
                self.label_1Frame=LabelFrame(self.master, width=230, height=90, labelwidget= self.label_1, bg='lavender')
                self.label_1Frame.place(x=490, y=35)

            elif selection.get() ==2:
                self.label_2=Label (self.master, text="label_2", bg='lavender')
                self.label_2Frame=LabelFrame(self.master, width=230, height=60, labelwidget= self.label_2, bg='lavender')
                self.label_2Frame.place(x=490, y=340)

#root.mainloop()
if __name__=='__main__':
    main()

uj5u.com熱心網友回復：

LabelFrame單擊單選按鈕時您創建了新的。您應該先創建兩個標簽框而不顯示它們，然后根據單選按鈕的選擇顯示一個：

class Window():
    def __init__(self, master):
        self.master=master
        self.master.title("Test")
        self.master.geometry('1000x700')

        self.Radio=Label (self.master, text="Select Method", bg='Lavender')
        self.RadioFrame=LabelFrame(self.master, width=230, height=150, labelwidget=self.Radio, bg='lavender')
        self.RadioFrame.place(x=200, y=35)

        selection = IntVar()
        selection.set(0)
        r1 = Radiobutton(self.RadioFrame, text="Option 1", variable=selection, value=1, command=lambda: Clicked(selection.get()), bg='lavender').pack()
        r2 = Radiobutton(self.RadioFrame, text="Option 2", variable=selection, value=2, command=lambda: Clicked(selection.get()), bg='lavender').pack()

        # create the two label frames without showing them
        self.label_1=Label (self.master, text="label 1", bg='lavender')
        self.label_1Frame=LabelFrame(self.master, width=230, height=90, labelwidget= self.label_1, bg='lavender')

        self.label_2=Label (self.master, text="label_2", bg='lavender')
        self.label_2Frame=LabelFrame(self.master, width=230, height=60, labelwidget= self.label_2, bg='lavender')

        def Clicked(selected):

            if selected ==1:
                self.label_1Frame.place(x=490, y=35) # show label frame 1
                self.label_2Frame.place_forget() # hide label frame 2

            elif selected ==2:
                self.label_1Frame.place_forget() # hide label frame 1
                self.label_2Frame.place(x=490, y=340) # show label frame 2

uj5u.com熱心網友回復：

你可以使用這樣的東西：

try:
    self.any_widget.destroy()
except AttributeError:
    pass

銷毀任何小部件。
所以，我已經更正了你的代碼：

from tkinter import *  

def main():    
    root = Tk()
    app = Window(root)
    root.mainloop()


class Window():
    def __init__(self, master):
        self.master=master
        self.master.title("Test")
        self.master.geometry('1000x700')

        self.Radio=Label (self.master, text="Select Method", bg='Lavender')
        self.RadioFrame=LabelFrame(self.master, width=230, height=150, labelwidget=self.Radio, bg='lavender')
        self.RadioFrame.place(x=200, y=35)

        selection = IntVar()
        selection.set(0)
        r1 = Radiobutton(self.RadioFrame, text="Option 1", variable=selection, value=1, command=lambda: Clicked(selection.get()), bg='lavender').pack()
        r2 = Radiobutton(self.RadioFrame, text="Option 2", variable=selection, value=2, command=lambda: Clicked(selection.get()), bg='lavender').pack()

        def Clicked(variable):
    
            if selection.get() ==1: 
                self.label_1=Label (self.master, text="label 1", bg='lavender')
                self.label_1Frame=LabelFrame(self.master, width=230, height=90, labelwidget= self.label_1, bg='lavender')
                self.label_1Frame.place(x=490, y=35)
                try:
                    self.label_2Frame.destroy()
                except AttributeError:
                    pass

            elif selection.get() ==2:
                self.label_2=Label (self.master, text="label_2", bg='lavender')
                self.label_2Frame=LabelFrame(self.master, width=230, height=60, labelwidget= self.label_2, bg='lavender')
                self.label_2Frame.place(x=490, y=340)
                try:
                    self.label_1Frame.destroy()
                except AttributeError:
                    pass

#root.mainloop()
if __name__=='__main__':
    main()

試試這個。

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