On Mon, 05 Mar 2007 12:16:17 -0600 Judith <[EMAIL PROTECTED]> wrote: >Hello every body I'm currently programming under perl Tk, but I want to >move to perl Gtk, I want to know the diffrences between these two and >wich is the last version of Gtk, thanks in advanced!!
< my 2 cents> To me, the biggest difference between Tk and Gtk2 is the way you need to manage your callbacks and events in more detail with Gtk2. In Gtk2, the return value from many callbacks determine if they will stop. It dosn't sound like much, but it represents a big break in thinking from Tk's way of doing it. You will find all sorts of seemingly complex code in callbacks, that sometimes return TRUE, sometimes FALSE; and this determines the flow of the script. The event loop, adding and removing subs to it, is an important feature of Gtk2, whearas Tk tends to hide the internals of the Mainloop from you. One big advantage of Gtk2, is that it can be made thread-safe, and this is a big step forward over Tk. Another Gtk2 advantage, is that is uses the themes setup for your other apps like mozilla or firefox.... so your Perl/Gtk2 programs look like your other apps. One big brick wall everyone runs into is the way lists are handled in Gtk2. Tk is alot simpler, but Gtk2 does have the the Ex and Simple series of list-releated modules to make it easy. Another advantage that Tk still has, is a better Canvas widget. The Gnome2::Canvas has anti-aliasing, but otherwise, it is not as feature packed as the Tk::Canvas. A very good intro to Gtk2 is http://forgeftp.novell.com/gtk2-perl-study/download/ One other big advantage of Gtk2, is the underlying c libraries. There is an active, and smart group of programmers working on the libraries. If you look thru the c libraries at ftp.gnome.org/pub, you will find many specialty libraries, ranging from OpenGL to Window Manager control, etc. All of these libraries, could conceivably be made into Perl/Gtk2 versions. And finally, there is Glib. I find this one of the best parts of Gtk2. It lets you setup an event loop in a command-line perl program, which is extremely handy in writing simple scripts that will run without X. </2 cents> So, my advice, is if you can afford the time, Gtk2 is worth it. It has some very nice widgets like Gtk2::ImageViewer( which has mouse zooming and panning), and things Tk can't do yet, like SVG. If you are pressed for time, Tk is quicker, but Gtk2 gives you a wider universe. zentara -- I'm not really a human, but I play one on earth. http://zentara.net/japh.html _______________________________________________ gtk-perl-list mailing list [email protected] http://mail.gnome.org/mailman/listinfo/gtk-perl-list
