Part IV describes the Tk widgets. These are the components you use to build up your graphical user interface. Tk widgets are simple to use, so you can rapidly develop your interface. At the same time, they have sophisticated features that you can use to fine-tune your interface in response to user feedback.
Chapter 27 describes buttons and menus. Tk 8.0 adds native look and feel to these widgets, so a single script will look different depending on the platform it is running on.
Associated with the widgets is a resource database that stores settings like colors and fonts. Chapter 28 describes the resource database and generalizes it to store button and menu configurations.
Chapter 29 describes a few simple widgets. The frame ...