In this Chapter we have examined the basics of a Perl/Tk
program - creating and configuring the main window and
other top level windows, the use of pack, grid,
and place in inserting and positioning widgets within
a window, and also the creation of frames within a window
as an aid to widget placement. Finally, we have discussed
callbacks associated with certain widgets, and in particular
the binding of event sequences with callbacks for widgets.
We have not gone into detail
explaining the various options associated with these
methods - this is better left to the major examples
of later chapters, and also your own experience. In the
next chapter we will explore the various kinds of basic
widgets available in Perl/Tk.