Install libgtk2-perl-doc by entering the following commands in the terminal:
sudo apt update sudo apt install libgtk2-perl-doc
Description:
Perl interface to the Gtk 2.x series (documentation files)
Gtk2 allows you to write graphical user interfaces in a Perlish and object-oriented way, freeing you from the casting and memory management in C, yet remaining very close in spirit to original API. . Gtk+ is a multi-platform toolkit for creating graphical user interfaces. Offering a complete set of widgets, the Gtk+ is suitable for projects ranging from small one-off tools to complete application suites. Find out more about Gtk+ at http://www.gtk.org. . This package contains the documentation for the Gtk2 perl modules and some examples.
Homepage: http://gtk2-perl.sourceforge.net/
Version: 2:1.24992-1build1
Section: universe/perl