A Beginner's Guide to Using pyGTK and Glade
The entry in the pyGTK FAQ on porting your application from GTK v1 to GTK v2 is becoming more and more complete. However, you should be aware of a few problems you're going to face. Obviously, all of your GtkText widgets need to be replaced with Gtk.TextView widgets. The corresponding code in the GUI also must be changed to accommodate that move. Likewise, any lists or trees you've done in GTK v1 have to be redone. What may come as a surprise is you also need to redo all dialog boxes, remaking them in GTK v2 format, which looks much nicer.
Also, a few syntax changes occurred, such as GDK moving to gtk.gdk and libglade moving to gtk.glade. For the most part, these are simple search and replaces. Use GtkText.insert_defaults instead of GtkTextBuffer.insert_at_cursor() and radiobutton.get_active() instead of radiobutton.active, for example. You can convert your Glade v1 file into a Glade v2 file using the libglade distribution's Python script. This gets you started on your GUI, but you may need to load Glade v2 and do some reconfigurations before porting your code.
Don't forget you can cut and paste from the Glade widget tree. This can make a redesign quick and painless.
Unset any possible positions in the Properties window so your startup doesn't look weird.
If you have a question you think other people might too, add it to the pyGTK FAQ.
The GNOME IRC server has a useful #pygtk channel. I couldn't have written CANVAS without the help of the people on the channel, especially James Henstridge. It's a tribute to the Open Source community that the principal developers often are available to answer newbie questions.
The finished demo code is available from ftp.linuxjournal.com/pub/lj/listings/issue113/6586.tgz.
Dave Aitel is the founder of Immunity, Inc., a New York-based security consulting company. CANVAS is Immunity's penetration testing and exploit development framework, written entirely in Python using pyGTK. More information on Immunity is available at www.immunitysec.com.
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