如何为我的程序创建一个与以下代码相关的重置按钮? [英] How would I create a reset button for my program relating with the following code?

问题描述

我正在尝试添加一个重置按钮，但似乎无法正常工作.我创建了一个主目录，以便在按下按钮但没有运气时可以参考它.有什么想法吗?

I am trying to add a reset button but I can't seem to get it to work. I created a main in order to refer back to it when the button is pressed but no luck. Any ideas?

import sys
from tkinter import *
import math

def main():
    def closeWin():
        myGui.destroy()                  #Close Window Function


    def kiloFunc():
        myText = kiloMent.get()          #Kilometers to Miles Fuction
        convert = 0.62
        miles = myText * convert
        finalKilo = Label(text = miles,fg='red',justify='center').place(x=200,y=80)


    def mileFunc():
        myText2 = mileMent.get()         #Miles to Kilometers Function
        convertTwo = myText2 // 0.62    
        finalMile = Label(text = convertTwo, fg = 'red',justify='center').place(x=200,y=170)

    myGui = Tk()

    kiloMent = IntVar()
    mileMent = IntVar()

    myGui.title("Distance Converter")
    myGui.geometry("450x200+500+200")

    myLabel = Label(text="Welcome! Please enter your value then choose your option:",fg="blue",justify='center')
    myLabel.pack()

    kiloEntry = Entry(myGui, textvariable = kiloMent,justify='center').pack()

    kilo2milesButton = Button(text = "Kilometers to Miles!", command = kiloFunc).pack()

    mileEntry = Entry(myGui, textvariable = mileMent,justify='center').place(x=130,y=105)

    miles2kiloButton = Button(text = "Miles to Kilometers!", command = mileFunc).place(x=150,y=135)

    reset = Button(text = "Reset Values!", command = main).place(x=10,y=165)

    quit = Button(text="Quit", command = closeWin).place(x=385,y=165)


    myGui.mainloop()

main()

推荐答案

再次调用 main()，您只是在创建GUI的另一个实例.相反，您应该做的是(如果我理解正确的话)，重置当前现有GUI的值.您可以使用GUI对象的 set()方法.

By calling main() again, you are simply creating another instance of the GUI. What you should do instead is (if I understand correctly), reset the values of the currently existing GUI. You can use the set() method of the GUI objects.

是

def reset_values():
    kiloMent.set(0)
    mileMent.set(0)
reset = Button(text="Reset Values!", command=reset_values).place(x=10, y=165)

把戏吗?

更彻底地查看您的代码，但是，那里还存在其他一些问题.首先，我建议不要在用户每次尝试转换值时都创建一个 Label .

Looking at your code more thoroughly, however, there are some other problems there, as well. To start with, I would suggest not creating a Label everytime the user tries to convert a value.

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