The value of the entry widget doesn't get updated

[Clara]

Hi, can somebody help me,..I have an assignment due next week but now
I'm stuck with this problem....
I tried to get values from entry widget using the
widgetcontrolvariable.get(),..but it seems that it won't work....
I can't print the value I input in the entry widget...However when I
first set the value to something I can get the value just fine...
This is my code
Help please...

msg='*~*Please Login to use the system*~*'
class LoginMenu(Frame):
	
	def createWidgets(self, msg):
		import tkFont
		self.x = StringVar()
		self.y = StringVar()	
		self.x.set("Type here") 
		self.messageLabel= Label(self, text=msg, pady=15,
font=tkFont.Font(weight='bold' ,size=10))
		self.messageLabel.grid(row=0, columnspan=6)
		self.nameLabel= Label(self, text='UserName  :', padx=12,
justify=LEFT)
		self.nameLabel.grid(row=1, column=0, ipadx=9, ipady=5)
		self.nameEntry= Entry(self,justify=LEFT, textvariable=self.x)
		self.nameEntry.grid(row=1, column=3, columnspan=2)
		self.nameEntry.update_idletasks()
		self.passLabel= Label(self, text='Password   :', padx=12,
justify=LEFT)
		self.passLabel.grid(row=2, column=0,ipadx=9, ipady=5)
		self.passEntry= Entry(self,justify=LEFT, show='*',
textvariable=self.y)
		self.passEntry.grid(row=2, column=3, columnspan=2)
		self.passEntry.update_idletasks()
		self.loginButton = Button(self, text='Login', command =
VerifyProcessor(self.x.get(), self.y.get()) )
		self.loginButton.grid(row=4, column=3, ipadx=15, ipady=3, pady=20)
		self.quitButton = Button(self, text='Exit', command = self.quit) 
		self.quitButton.grid(row=4, column=4, ipadx=20, ipady=3, pady=20,
padx=10)

	def __init__(self, msg, master=None):
		Frame.__init__(self, master)
		self.grid(column=4, row=4)
		self.createWidgets(msg)

class VerifyProcessor:

	def __init__(self, thename, thepass):
		self.username = thename
		self.password = thepass

	def __call__(self):
		print self.username
		print self.password


app = LoginMenu(msg)
app.master.title("Login Menu")
app.master.maxsize(280,200)
app.mainloop()