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I am trying to create two buttons to switch frame config by raising different Frame above an other. but the tkraise() function doesn't seems working... Please help to check if there are any mistake or concept error of using tkraise.

Thanks for helping

import tkinter as tk
from tkinter import ttk

SUNKABLE_BUTTON = 'SunkableButton.TButton'

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)

        # initializing frames to an empty array
        self.frames = {} 
  
        top_container = tk.LabelFrame(self, width=400, height=100, text="item")
        top_container.grid(row = 0, column=0, columnspan=2)
        
        mid_container_l = tk.LabelFrame(self, width=200, height=100, text="item_a")
        mid_container_l.grid(row = 1, column=0)

        mid_container_r = tk.LabelFrame(self, width=200, height=100, text="item_b")
        mid_container_r.grid(row = 1, column=1)

        but_container = tk.LabelFrame(self, width=400, height=400, text="item")
        but_container.grid(row = 2, column=0, columnspan=2, sticky=tk.W)
        
        for F in (One,Two):
            frame = F(self)
            self.frames[F] = frame

        btn_1 = tk.Button(but_container, text="btn_1", command=lambda : self.show_frame(One))
        btn_1.pack(side=tk.LEFT)

        btn_2 = tk.Button(but_container, text="btn_2", command=lambda : self.show_frame(Two))
        btn_2.pack(side=tk.LEFT)

        #self.show_frame(One)

    def show_frame(self, cont):
        frame = self.frames[cont]
        print(frame)
        frame.tkraise(aboveThis=None)

class One(tk.Frame):
    def __init__(self, parent):
        tk.Frame.__init__(self, parent)
        but_container_in = tk.Frame(parent, width=400, height=200, bg="yellow")
        but_container_in.grid(row = 3, column=0, columnspan=2, sticky=tk.W)

class Two(tk.Frame):
    def __init__(self, parent):
        tk.Frame.__init__(self, parent)
        but_container_in_l = tk.Frame(parent, width=400, height=200, bg="green")
        but_container_in_l.grid(row = 3, column=0, columnspan=2, sticky=tk.W)

        #but_container_in_r = tk.Frame(parent, width=200, height=200, bg="red")
        #but_container_in_r.grid(row = 3, column=1, columnspan=2, sticky=tk.W)

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

I am expecting someone can point out mine blind spot

解决方案

tkraise工作中。问题是您正在提升屏幕上不可见的帧，因此没有视觉指示表明它正在工作。

问题出在您的类One和Two. 这些类构成两个框架：类本身的实例，然后是一个内部框架。两者都是 的子级parent，但只有内部框架被添加到窗口（在本例中为grid）。

我不明白你为什么要在一个本身就是框架的类中创建一个内部框架。至少，那些内部框架应该是班级的孩子而不是父母的孩子。

当您将内部框架设为 的子级self并调用grid该类的实例时，您的代码就可以工作了。

class One(tk.Frame):
    def __init__(self, parent):
        tk.Frame.__init__(self, parent)
        self.grid(row = 3, column=0, columnspan=2, sticky=tk.W)

        but_container_in = tk.Frame(self, width=400, height=200, bg="yellow")
        but_container_in.pack(fill="both", expand=True)

class Two(tk.Frame):
    def __init__(self, parent):
        tk.Frame.__init__(self, parent)
        self.grid(row = 3, column=0, columnspan=2, sticky=tk.W)

        but_container_in_l = tk.Frame(self, width=400, height=200, bg="green")
        but_container_in_l.pack(fill="both", expand=True)

注意事项：

• 内部框架现在是 的子框架self，因为这些类的实例本身就是框架，而这些类的实例就是您需要调用的那些tkraise。
• 我将调用移到了内部框架grid上self而不是内部框架上。
• 我在内部框架上添加了一个调用，pack因为这是让框架填充其父框架的最简单方法