class Main:
def __init__(self):
self.root = Tk()
self.top = Mainloop(self.root)
self.root.protocol("WM_DELETE_WINDOW", self.onClose)
#THIS CALL LOCKS THE THREAD
def runMainloop(self):
self.top.start()
self.root.mainloop()
#This is called when window is closed
def onClose(self):
self.top.exit()
self.root.destroy()
