From:	gfoot AT mc31 DOT merton DOT ox DOT ac DOT uk (George Foot)
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: allegro 2.2 's textout function
Date:	27 Feb 1997 03:50:50 GMT
Organization:	Oxford University
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Distribution:	world
Message-ID:	<5f30aq$ksg@news.ox.ac.uk>
References:	<199702251244 DOT NAA06888 AT gil DOT physik DOT rwth-aachen DOT de> <x3E$qCAytJFzEwpN AT talula DOT demon DOT co DOT uk>
NNTP-Posting-Host:	mc31.merton.ox.ac.uk
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

Shawn Hargreaves (Shawn AT talula DOT demon DOT co DOT uk) wrote:
: Schuster writes:
: >I'm writting on a c++ program with Allegro. I switched to alleg22 beta
: >and now get a lot of warnings, cause the textout-function claims that
: >the char*  argument should be "unsigned char* ". Why this change?
: >Is there any way to get rid of it or change it to the old way?

: I changed this while I was extending the font routines to support
: extended character sets, because the unsigned char type makes more sense
: for storing characters above 127. It never occured to me that this would
: break any code, but if it is a problem for people, it can easily be
: changed back. Opinions, anyone?

Hmm. The new type is more logical - I doubt that anyone needs to pass
negative numbers to the function, if it wasn't defined before anyway.

You could change it to "int" and allow for massive font expansion :)

You could define two versions, one signed and one unsigned, but this
wouldn't work in C programs, only in C++, and might be confusing to
some people.

You could make two separate functions, with slightly different names,
but again this could get confusing.

You could make a #define people could use before #including <allegro.h>
which changed the prototype for the function, but would this link
correctly?

If I were you, I think I'd make it an int, though.

-- 
George Foot <gfoot AT mc31 DOT merton DOT ox DOT ac DOT uk>
Merton College, Oxford.

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