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详细说明： GTK is essentially an object oriented application programmers interface (API). Although written completely in C, it is implemented using the idea of classes and callback functions (pointers to functions). There is also a third component called GLib which contains a few replacements for some standard calls, as well as some additional functions for handling linked lists, etc. The replacement functions are used to increase GTK’s portability, as some of the functions implemented here are not available or are nonstandard on other uni xes such as g_strerror(). Some also contain enhancements to the libc versions, such as g_malloc that has enhanced debugging utilities. In version 2.0, GLib has picked up the type system which forms the foundation for GTK’s class hierarchy, the signal system which is used throughout GTK, a thread API which abstracts the different native thread APIs of the various platforms and a facility for loading modules. As the last component, GTK uses the Pango library for internationalized text output. This tutorial describes the Python interface to GTK+ and is based on the GTK+ 2.0 Tutorial written by Tony Gale and Ian Main. This tutorial attempts to document as much as possible of PyGTK, but is by no means complete. This tutorial assumes some understanding of Python, and how to create and run Python programs. If you are not familiar with Python, please read the Python Tutorial [http://www.python.org/doc/current/tut/tut.html] first. This tutorial does not assume an understanding of GTK; if you are learning PyGTK to learn GTK, please comment on how you found this tutorial, and what you had trouble with. This tutorial does not describe how to compile or install Python, GTK+ or PyGTK. This tutorial is based on: • GTK+ 2.0 through GTK+ 2.4 • Python 2.2 • PyGTK 2.0 through PyGTK 2.4 ...展开收缩
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