From:	"Adam Christopher Lawrence" <nospam AT pissoff DOT com>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Void pointer problem with datafiles/C++
Date:	Wed, 3 Mar 1999 14:25:06 -0500
Organization:	Interlog Internet Services
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To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp
Reply-To:	djgpp AT delorie DOT com

    As explained in the Allegro docs, using datafile elements in C++ for
function calls causes a void pointer warning, and is (supposedly) rectified
by using a cast.

    The example provided is:

    draw_sprite(screen, (BITMAP *)data[THE_IMAGE].dat, x, y);

    My code has a defined datafile called Data, and it contains bitmaps as
well as a pallete.

    I'm trying to define the pallete by using the set_pallete command:

    set_pallete(Data[PALLETE].dat);

    and am getting the void pointer warning.

    If I try a cast, as suggested in the docs:

    set_pallete( (PALLETE *)Data[PALLETE].dat);

    I get a 'parse error before )' from the compiler.

    How can I code this without a void pointer warning?

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