Remove window title bar in TKinter Python

Question

How do I remove the title bar from a Toplevel() window in Tkinter. Right now I for my main I have

    self.master.title("Subtest")
    self.master.geometry("400x200")



    self.alertwindow()


    Label(self.master,textvariable=self.connected,height=4).grid(row=0,column=0)


    Button(self.master,text="Monitor",command= lambda: self.startnewthread(1),width=10).grid(row=6,column=1)
    Button(self.master,text="Quit",command=self.haltprogram).grid(row=6,column=0)

And for my alert window function I have

def alertwindow(self):
self.listbox=Listbox(Toplevel(self.master,width=150).overrideredirect(True),width=150).pack)

I was wanting the program to open up a root window, and then a toplevel listbox without a title bar; however, the only thing the program is doing right now is freezing, and when I remove the .overrideredirect(True), the program launches two listbox windows. How can I have the program open only one listbox without a title bar on windows? Thanks

do you need to actually call pack in the last line of code you posted? Listbox(Toplevel(...).pack()) As it is, you're passing a method where Tkinter expects a Widget. I'm not sure what that would actually do when you try to run the program, but it wouldn't be what you want it to do in any event... — mgilson

mgilson mgilson · Accepted Answer · 2013-01-04T01:28:37

Looking at this line

self.listbox=Listbox(Toplevel(self.master,width=150).overrideredirect(True),width=150).pack)

It's pretty clear you're trying to do WAY too much on 1 line. (Your parenthesis don't even match). Let's break it up, shall we?

new_top = Toplevel(self.master,width=150)
new_top.overrideredirect(True)
self.listbox = Listbox(new_top,width=150)
self.listbox.pack()

Also note that you seem to be using .grid and .pack -- Generally that's ill advised and Tkinter will happily spend all of eternity trying to negotiate a proper placement of a widget when you try to use them together.

My guess about what's happening:

your actual code has properly balanced parenthesis so there is no SyntaxError
Toplevel.overrideredirct returns None
Listbox sees None as the parent widget and substitutes the root widget (Tk)
Then you're using .grid and .pack both on the root widget which causes your program to hang.

Remove window title bar in TKinter Python

1 Answers