On Sun, 3 Sep 2000, David Stuart wrote:
> Hi All,
>
> I know this is a theoretical question at best, but I'm new to dia's
> source code so bear with me.. I see lots of things like this:
>
> /* This is a subclass of Object used to help implementing objects
> * that form a polygon-like shape of line-segments.
> */
> struct _BezierShape {
> /* Object must be first because this is a 'subclass' of it. */
> Object object;
>
> int numpoints; /* >= 2 */
> BezPoint *points;
> BezCornerType *corner_types;
> };
>
>
> And of course, the declaration of "object.h" in "lib".. which is basically
> just pointers to functions (+ some other stuff)..
>
> So, since we're already doing a kind of 'inheritance', and we are using
> 'interfaces' (like in object.h), I can't help wondering why the project
> wasn't done using an OO language (like say, C++)..
C is an OO language (that is, if you define OO language as a language you
can do OO programming in). In future, most of these objects in dia will
probably be moved over to the GObject system found in glib-1.3, as it
provides a lot of the base features we use for the objects in dia.
>
> Don't get me wrong, I'm not advocating that we change (and I don't want
> to get into a debate about the merits of one language over another),
> I'm just wondering why.. :) (was g++ not 'up to snuff' yet?)
>
> My 2nd question, where can I find docs on the gtk and gnome APIs that
> dia uses? (hope I don't have to grok all that source code to figure them
> out myself..)
Check out developer.gnome.org. You can find all the gtk and gnome API
documentation and the online version of Havoc's book GTK+/GNOME
Application Development.
>
> Dave
>
James.
--
Email: [EMAIL PROTECTED]
WWW: http://www.daa.com.au/~james/
