Python Tkinter检查按钮值不可访问 [英] Python tkinter checkbutton value not accessible
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问题描述
我想用Python构建一个小的GUI应用程序。目的是要有一个主窗口调用其他几个窗口。在这些所谓的窗口之一中,我有一个复选按钮。我的问题是我无法读取此复选按钮的值,而可以读取Entry小部件的值。我在做什么错?
I want to build a little GUI application in Python. The goal is to have a main window calling several other windows. In one of these called windows I have a checkbutton. My problem is that I cannot read the value of this checkbutton, whereas I can read the value of an Entry widget. What am I doing wrong?
from tkinter import *
import tkinter as tk
class mainwindow():
def __init__(self, master):
self.master = master
menubalk = Menu(self.master)
menubalk.add_command(label="New window", command=self.openNewwindow)
self.master.config(menu=menubalk)
def openNewwindow(self):
window = newwindow()
window.mainloop()
class newwindow(Tk):
def __init__(self):
Tk.__init__(self)
self.var = BooleanVar()
self.checkbutton = Checkbutton(self, text="Check", variable=self.var)
self.checkbutton.grid(column=0, row=0)
self.var2 = StringVar()
self.entry = Entry(self, textvariable=self.var2)
self.entry.grid(column=2,row=0)
self.button2 = Button(self,text=u"Show", command=self.showValues).grid(column=1, row=0)
def showValues(self):
print('Value checkbutton:', self.var.get(), ';', 'Value entryfield: ', self.entry.get())
def main():
root = Tk()
window = mainwindow(root)
root.mainloop()
if __name__ == '__main__':
main()
推荐答案
您正在制作多个,在程序中单独的Tkinter应用程序。不要那样做。要创建新窗口,请使用 Toplevel
You are making multiple, separate Tkinter applications in your program. Do not do that. To create new windows, use the Toplevel
widget.
from tkinter import *
class mainwindow():
def __init__(self, master):
self.master = master
menubalk = Menu(self.master)
menubalk.add_command(label="New window", command=self.openNewwindow)
self.master.config(menu=menubalk)
def openNewwindow(self):
def showValues(var, entry):
print('Value checkbutton:', var.get(), ';', 'Value entryfield: ', entry.get())
window = Toplevel(self.master)
var = BooleanVar()
checkbutton = Checkbutton(window, text="Check", variable=var)
checkbutton.grid(column=0, row=0)
var2 = StringVar()
entry = Entry(window, textvariable=var2)
entry.grid(column=2,row=0)
button2 = Button(window,text=u"Show", command=lambda: showValues(var, entry))
button2.grid(column=1, row=0)
def main():
root = Tk()
window = mainwindow(root)
root.mainloop()
if __name__ == '__main__':
main()
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