This book evolved from the book Learning Perl/Tk by Nancy Walsh (O’Reilly). While the response to that book made it clear that there were many avid and loyal Perl/Tk users, readers also let us know that they wished the book showed advanced techniques, covered some nonstandard widgets, and included more extended examples of Perl/Tk programming.
So Nancy teamed up with Steve Lidie, already a seasoned Perl/Tk programmer and author, and together they doubled the size of the book and changed its title to befit its expansion. The baby emu on the cover of Learning Perl/Tk grew into the adult emu on the cover of this book. Programmers who are new to Perl/Tk can still learn from this book, but as the title says, this book will also turn you into a master.