Using TCL extensions to set native window style in Tkinter
pythonware.com/library/tkinter/introduction/… documents a overrideredirect method that will remove thetitlebar and borders, if that is not enough you must set the native window style, I'm not sure if Tkinter gives you that kind of low-level access, if not, try the something like twapi.magicsplat.com/ui.html#set_window_...