Tkinter problem

[deanhystad]

Wrong widget toolkit. No hide/show in tkinter that I can find. Maybe it is the C/C++/C# programmer in me, but I hate the idea of destroying a button just because you want to hide it for a few seconds. This little demo uses pack_forget/pack to hide/show a button. It makes a special frame for the button to make it easier to pack. The demo has a blink feature that I set to 100x a second. Ran for several minutes and saw no change in memory use.

from tkinter import *

class Peekabutton(Frame):

    def __init__(self, root, text=None, textvar=None, command=None, **kwargs):
        super().__init__(root, **kwargs)
        self.root = root
        self.blinking = False
        self.button = Button(self, text=text, textvar=textvar, command=command)
        self.show()

    def show(self):
        self.button.pack(fill=BOTH, expand=1)
        self.visible = True

    def hide(self):
        self.button.pack_forget()
        self.visible = False

    def toggle(self):
        if self.visible:
            self.hide()
        else:
            self.show()

    def blink_event(self):
        if self.blinking:
            self.toggle()
            self.root.after(10, self.blink_event)

    def blink(self):
        self.blinking = not self.blinking
        if self.blinking:
            self.blink_event()
    
root = Tk()
root.title('Hidden Buttons')
root.geometry('300x100')
b2 = Peekabutton(root, text='-a-', height=100, width=100)
b1 = Peekabutton(root, text='Peek', command=b2.blink, height=100, width=100)
b3 = Peekabutton(root, text='Button', command=b2.toggle, height=100, width=100)

b1.pack(side=LEFT, fill=BOTH, expand=1, padx=10, pady=10)
b2.pack(side=LEFT, fill=BOTH, expand=1, padx=10, pady=10)
b3.pack(side=LEFT, fill=BOTH, expand=1, padx=10, pady=10)