#Example code that shows a way to switch between two windows,
#having only one of the visible (active) at a time.
# The key is the window.withdraw() call (to hide)
# and the window.deiconify() to make it appear again.



from tkinter import *

class WinDos:

    def __init__(self,mainWin):
        self.mainWin = mainWin


        Label(self.mainWin, text="Main Window").pack()
        b1 = Button(self.mainWin, text="switch to 2nd window", command=self.win2up)
        b1.pack()
        



        self.secondWin = Toplevel()
        Label(self.secondWin, text="SecondWin").pack()
        b2 = Button(self.secondWin, text="Switch to first window!", command=self.win1up)
        b2.pack()
        self.secondWin.withdraw()  # Hide this window until we need it!
        self.secondWin.protocol("WM_DELETE_WINDOW", self.endProgram)


    def endProgram(self):
        print("end program called!")
        self.mainWin.destroy()

    def win1up(self):
        print("Switching to window 1!")
        self.secondWin.withdraw()
        self.mainWin.deiconify()

    def win2up(self):
        print("Switching to window 2!")
        self.mainWin.withdraw()
        self.secondWin.deiconify()

    

mw = Tk()
myApp = WinDos(mw)
mw.mainloop()
print("All done!")