# -*- coding : utf-8 -*-
u"""
GUI programming sample
"""
import tkinter
from tkinter import messagebox

def button_push(event):
    u"What happens when the button is clicked"
    edit_box.delete(0, tkinter.END)

def func_check(event):
    u"Check the status of the check box and display it"
    global val1
    global val2
    global val3

    text = ""

    if val1.get() == True:
    	text += "Item 1 is checked\n"
    else:
    	text += "Item 1 is unchecked\n"
    if val2.get() == True:
    	text += "Item 2 is checked\n"
    else:
    	text += "Item 2 is unchecked\n"
    if val3.get() == True:
    	text += "Item 3 is checked\n"
    else:
    	text += "Item 3 is unchecked\n"

    messagebox.showinfo("info", text)


if __name__ == "__main__":
    root = tkinter.Tk()
    root.title(u"GUI sample")
    root.geometry("400x300")

    #Text box
    edit_box = tkinter.Entry(width=50)
    edit_box.insert(tkinter.END, "Sample string")
    edit_box.pack()

    #button
    button = tkinter.Button(text=u"Erase", width=30)
    button.bind("<Button-1>", button_push)
    button.pack()
    # button.place(x=105, y=30)

    #Checkbox
    val1 = tkinter.BooleanVar()
    val2 = tkinter.BooleanVar()
    val3 = tkinter.BooleanVar()
    val1.set(False)
    val2.set(True)
    val3.set(False)
    checkbox1 = tkinter.Checkbutton(text=u"Check 1", variable=val1)
    checkbox1.pack()
    checkbox2 = tkinter.Checkbutton(text=u"Check 2", variable=val2)
    checkbox2.pack()
    checkbox3 = tkinter.Checkbutton(text=u"Check 3", variable=val3)
    checkbox3.pack()

    #button
    button2 = tkinter.Button(root, text=u"Get checkbox", width=50)
    button2.bind("<Button-1>", func_check)
    button2.pack()

    tkinter.mainloop()

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