From: Marko Rauhamaa <marko@pacujo.net>
To: guile-gtk@sources.redhat.com
Subject: Re: texinfo documentation
Date: Sun, 25 May 2003 23:28:00 -0000 [thread overview]
Message-ID: <m3u1bibomb.fsf@lumo.pacujo.net> (raw)
In-Reply-To: <87el2mmymo.fsf@zip.com.au>
Kevin Ryde <user42@zip.com.au>:
> Marko Rauhamaa <marko@pacujo.net> writes:
> >
> > Kevin Ryde <user42@zip.com.au>:
> >
> >> `app'
> >> Don't be tempted to define `app' to some sort of widget or the
> >> like. In Guile 1.6.4 `app' is used for the implementation of the
> >> module system.
> >
> > What does that mean?
>
> Exactly what it says. Try defining app to something and then doing a
> use-modules.
Oh, if you mean:
`app'
This global symbol is reserved by guile. Don't define it.
then better state it that way.
I was confused because I didn't know why I would "be tempted to define"
it "to some sort of widget".
> > I don't know (yet) how much of the whole story needs to be exposed to
> > the application developer, but the GTK functions dealing with signals
> > come in two C variants: regular and full. The guile code always uses the
> > full variant but strips the "-full" suffix from the procedure name.
>
> I haven't looked closely enough to see if full variants work or can be
> usefully used from scheme code. The regular forms are presumably what
> will be used most often.
There are no scheme procedures for the full variants. (But guile-gtk
secretly uses the full variants to implement the plain-vanilla
variants.)
> > Also: GdkRectangle is a pair of pairs. However, whenever it is an input
> > parameter, GdkRectangle is expanded into (x y w h). Thus the
> > pair-of-pairs format is used only to return a GdkRectangle.
>
> That's rather inconsistent, and will probably make life hard if one
> wants to pass a returned value on to another function.
Some of the inconsistency is there in the C functions themselves. But
guile-gtk expands rectangles "consistently" everywhere. The reason is
obviously that it's nicer to call
(gdk-useful-function window x y w h)
than
(gdk-useful-function window (cons (cons x y) (cons w h)))
Well, you probably need rectangles most often to process exposures. It
would be nice to be able to call:
(gdk-gc-set-clip-rectangle gc (gdk-event-area e))
instead of
(let ((r (gdk-event-area e)))
(gdk-gc-set-clip-rectangle (caar r) (cdar r) (cadr r) (cddr r)))
Since gdk-gc-set-clip-rectangle was added recently by me (following
existing examples), I could change it to take a rectangle.
Marko
--
Marko Rauhamaa mailto:marko@pacujo.net http://pacujo.net/marko/
next prev parent reply other threads:[~2003-05-25 23:28 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-05-12 1:21 Kevin Ryde
2003-05-12 1:52 ` Marko Rauhamaa
2003-05-23 22:01 ` Kevin Ryde
2003-05-23 23:36 ` Marko Rauhamaa
2003-05-23 23:57 ` Kevin Ryde
2003-05-24 0:05 ` Marko Rauhamaa
2003-05-24 2:19 ` Kevin Ryde
[not found] ` <m3llwwdhjf.fsf@lumo.pacujo.net>
2003-05-25 22:48 ` Kevin Ryde
2003-05-25 23:28 ` Marko Rauhamaa [this message]
2003-05-26 0:06 ` Kevin Ryde
2003-05-26 2:42 ` Marko Rauhamaa
2003-05-29 23:37 ` Kevin Ryde
2003-05-30 1:06 ` Marko Rauhamaa
2003-06-13 22:05 ` gdk-string-to-compound (was: texinfo documentation) Kevin Ryde
2003-07-07 22:30 ` gdk-string-to-compound Kevin Ryde
2003-05-29 23:43 ` texinfo documentation Kevin Ryde
2003-06-01 4:31 ` Marko Rauhamaa
2003-06-02 23:51 ` gdk-window-get-origin (was: texinfo documentation) Kevin Ryde
2003-07-07 22:29 ` gdk-window-get-geometry " Kevin Ryde
2003-05-26 0:07 ` gdk-rectangle-new " Kevin Ryde
2003-05-26 1:20 ` Marko Rauhamaa
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