Creating a seek bar
Now, let's add a seek bar to the audio player. Tkinter offers the Scale widget that we used for the volume scale. The Scale widget could have functioned as a seek bar. But we want something more fancy.
Moreover, the Scale widget would look different on different platforms. Instead, we want the seek bar to look uniform on all platforms. This is where we can create our own widget to meet the custom needs for the audio player.
Let's create our own Seekbar widget, as shown in the following image:
The simplest way to create our own widget is to inherit from an existing widget or the Widget class.
When you look at the source code of Tkinter, you will find that all the widgets inherit from a class named Widget. The Widget class in turn inherits from another class called BaseWidget. The BaseWidget class contains the code that is used to handle the widget's destroy() method, but it is not aware of a geometry manager.
Therefore, if we want our custom widget to be aware of and use geometry...