Python 如何在具有多个页面的tkinter应用程序中获取按钮单击的输入值？

单击按钮

Run

时，我想从Tkinter应用程序的

Page2

获取当前输入值

请帮忙

我的代码：

import tkinter as tk
from tkinter import ttk
from tkinter import RAISED


LARGEFONT =("Verdana", 35)

class tkinterApp(tk.Tk):

    # __init__ function for class tkinterApp
    def __init__(self, *args, **kwargs):

        # __init__ function for class Tk
        tk.Tk.__init__(self, *args, **kwargs)

        # creating a container
        container = tk.Frame(self)
        container.pack(side = "top", fill = "both", expand = True)

        container.grid_rowconfigure(0, weight = 1)
        container.grid_columnconfigure(0, weight = 1)

        container2 = tk.Frame(self, relief=RAISED, borderwidth=2)
        container2.pack(side="bottom",fill="both", expand=True)
        container2.grid_rowconfigure(0, weight = 1)
        container2.grid_columnconfigure(0, weight = 1)

        def runStadiumpy():
            pass
            #get all entry value from page 2


        runButton = ttk.Button(container2, text="Run", command=runStadiumpy)
        runButton.pack(side="left", padx=5, pady=5)

        # initializing frames to an empty array
        self.frames = {}

        # iterating through a tuple consisting
        # of the different page layouts
        for F in (StartPage, Page1, Page2):

            frame = F(container, self)

            # initializing frame of that object from
            # startpage, page1, page2 respectively with
            # for loop
            self.frames[F] = frame

            frame.grid(row = 0, column = 0, sticky ="nsew")

        self.show_frame(StartPage)

    # to display the current frame passed as
    # parameter
    def show_frame(self, cont):
        frame = self.frames[cont]
        frame.tkraise()

# first window frame startpage

class StartPage(tk.Frame):
    def __init__(self, parent, controller):
        tk.Frame.__init__(self, parent)

        # label of frame Layout 2
        label = ttk.Label(self, text ="Startpage", font = LARGEFONT)

        # putting the grid in its place by using
        # grid
        label.grid(row = 0, column = 2, padx = 10, pady = 10)

        button1 = ttk.Button(self, text ="Page 1",
        command = lambda : controller.show_frame(Page1))

        # putting the button in its place by
        # using grid
        button1.grid(row = 1, column = 1, padx = 10, pady = 10)

        ## button to show frame 2 with text layout2
        button2 = ttk.Button(self, text ="Page 2",
        command = lambda : controller.show_frame(Page2))

        # putting the button in its place by
        # using grid
        button2.grid(row = 2, column = 1, padx = 10, pady = 10)




# second window frame page1
class Page1(tk.Frame):

    def __init__(self, parent, controller):

        tk.Frame.__init__(self, parent)
        label = ttk.Label(self, text ="Page 1", font = LARGEFONT)
        label.grid(row = 0, column = 2, padx = 10, pady = 10)

        # button to show frame 2 with text
        # layout2
        button1 = ttk.Button(self, text ="StartPage",
                            command = lambda : controller.show_frame(StartPage))

        # putting the button in its place
        # by using grid
        button1.grid(row = 1, column = 1, padx = 10, pady = 10)

        # button to show frame 2 with text
        # layout2
        button2 = ttk.Button(self, text ="Page 2",
                            command = lambda : controller.show_frame(Page2))

        # putting the button in its place by
        # using grid
        button2.grid(row = 2, column = 1, padx = 10, pady = 10)




# third window frame page2
class Page2(tk.Frame):
    def __init__(self, parent, controller):
        tk.Frame.__init__(self, parent)
        label = ttk.Label(self, text ="Page 2", font = LARGEFONT)
        label.grid(row = 0, column = 2, padx = 10, pady = 10)

        # button to show frame 2 with text
        # layout2
        button1 = ttk.Button(self, text ="Page 1",
                            command = lambda : controller.show_frame(Page1))

        # putting the button in its place by
        # using grid
        button1.grid(row = 1, column = 1, padx = 10, pady = 10)

        # button to show frame 3 with text
        # layout3
        button2 = ttk.Button(self, text ="Startpage",
                            command = lambda : controller.show_frame(StartPage))

        # putting the button in its place by
        # using grid
        button2.grid(row = 2, column = 1, padx = 10, pady = 10)

        lbl1 = ttk.Label(self, text="Question:")
        lbl1.grid(row = 3, column = 1, padx = 10, pady = 10)

        entry1 = ttk.Entry(self)
        entry1.grid(row = 3, column = 2, padx = 10, pady = 10)
        entry1.insert(0,"abc")


# Driver Code
app = tkinterApp()
app.mainloop()

---

这对您很有用：-

def runStadiumpy():
    value = entry1.get()
    return value

        

---

在课堂

Page2

中为您的条目保留一个参考，例如：

class Page2(tk.Frame):
    def __init__(self, parent, controller):

        ......

        self.entry1 = ttk.Entry(self)
        self.entry1.grid(row = 3, column = 2, padx = 10, pady = 10)
        self.entry1.insert(0,"abc")

由于您将这些框架保存在您的

self.frames

中，因此您可以通过

self.frames[Page2]

访问

Page2

。为您的条目添加引用后，使用

self.frames[Page2].entry1

直接获取条目

因此，在添加上面的代码后，在函数

runStadiumpy（）

中使用下面的代码：

---

您将在第2页中获得内容，但类

tkinterApp

中未定义

entry1

！尝试将该功能块写入类

Page2

中！但我希望此功能可以跨页面使用。您可以导航到Page2类，然后从中提取值。尝试在runStadiumpy（）中使用

var=self.frames[Page2]

，然后使用

var.entry1.get（）

获取值。

def runStadiumpy():
    print(self.frames[Page2].entry1.get())