![]() ![]() ![]() Self.button = tk.Button(self, text="Open a new window", command=self. This is a small working example where you can see how it would work: import Tkinter as tk This chapter will step back and look at three broad concepts required to understand Tk: widgets, geometry management, and event handling. A toplevel has an owner which can be the Tk root window or other application window. Tk Concepts With your first example behind you, you now have a basic idea of what a Tk program looks like and the type of code you need to write to make it work. Instead we have Toplevel for new toplevel windows (ie dialogs). However, you should not be calling Tk() again in the message function. To set this attribute to None when you close the window, you can use the protocol method to set a callback. You can check for the existence of a window using the winfoexists() method of the widget object. ![]() Even Tkinter has lots of classes with its respective methods, so it looks like it is necessary for your purpose.īack to your question, a solution could be setting the Toplevel window as an attribute of a class where you wrap all your application, and only open a new window if this attribute is None. método winfoismapped() Este método se utiliza para comprobar si el widget especificado está visible o no. The alternative (global variables and functions everywhere) is not definitely a good approach. Tkinter proporciona numerosos métodos de widgets universales o métodos de widgets básicos que funcionan con casi todos los widgets disponibles. Sooner or later, you'll have to understand object-oriented programming if you want to program in Python successfully. cursor cursor that appears on the widget which can be an arrow, a dot etc. ) Optional parameters root root window (optional) bg background colour fg foreground colour bd border height height of the widget. I am not (yet) a OOP programmer so please avoid that paradigm if possible. Syntax: toplevel Toplevel (root, bg, fg, bd, height, width, font. This method is used to check if the specified widget exists or not i.e if the widget is destroyed or not. ![]()
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