在Python 3.5中使用Tkinter将类值传递给另一个类

Question

I have the following code (example of my real program):

from tkinter import *
def class1(Frame)

    def nv(self,x):
        self.vent=Toplevel(self.master)
        self.app=class2(self.vent)
        self.value=x

    def __init__(self,master):
        super().__init__(master)
        self.master=master
        self.frame=Frame(self.master)
        self.btn=Button(self, text="example", command=lambda: self.nw(1))
        self.btn.pack()
        self.pack()

def class2(Frame):
    def __init__(self, master):
        super().__init__(master)
        self.master=master
        self.frame=Frame(self.master)
        self.value=class1.nw.value.get()
root= Tk()
marco=Frame(root)
marco.pack
lf=class1(marco)
root.mainloop()

this last part is the problem, i cant use .get() properly for this problem, I want to get the value of x when I create the new window. I use lambda so i can execute the command with parameters. So the question is, is there a way for me to access the value of x in class 2?

Answer 1

You appear to be quite confused about the usage of classes when using tkinter . super() should not be used with tkinter as explained here and when declaring a class you should use the class keyword, not def . .get() is a method of a tkinter variable class such as tkinter.IntVar , tkinter.StringVar , etc. so is not needed in the example you have given.

What you need is the function in the Frame you are trying to get the value of x from ( nv ) and then parse that value to the __init__ method in the child Frame .

Here is my solution:

from tkinter import *

class Class1(Frame):

    def nv(self,x):
        self.vent = Toplevel(self.master)
        self.app = Class2(self.vent,x)

    def __init__(self,master):
        Frame.__init__(self,master)
        self.master = master
        self.btn = Button(self, text="example", command=lambda: self.nv(1))
        self.btn.pack()
        self.pack()

class Class2(Frame):

    def __init__(self, master, x):
        Frame.__init__(self,master)
        self.master=master
        self.frame=Frame(self.master)
        self.x_text = Label(self, text=str(x))
        self.x_text.pack()
        self.pack()

root = Tk()
marco = Frame(root)
marco.pack()
lf = Class1(marco)
root.mainloop()