gl_getcontext (3)
get the current graphics contents.
SYNOPSIS
#include <vgagl.h>
void gl_getcontext(GraphicsContext * gc );
extern GraphicsContext currentcontext ;
/* this is already in vgagl.h */
DESCRIPTION
Save the current context in the structure variable
gc .
You can also get the current context from the global
variable
currentcontext ;
However, simply access single elements in this structure
with the macros given in
vgagl (7)
but do not copy
currentcontext
in another structure. This is because the size of the structure
might change and your program does not know it when it will be
linked dynamically to future svgalib versions.
Instead use
gl_allocatecontext (3)
to allocate such a structure, fill it with
gl_getcontext
and release it with
free (3)
after usage.
SEE ALSO
AUTHOR
This manual page was edited by Michael Weller <eowmob@exp-math.uni-essen.de>. The
exact source of the referenced demo as well as of the original documentation is
unknown.
It is very likely that both are at least to some extent are due to
Harm Hanemaayer <H.Hanemaayer@inter.nl.net>.
Occasionally this might be wrong. I hereby
asked to be excused by the original author and will happily accept any additions or corrections
to this first version of the svgalib manual.
man3/gl_getpalettecolor.3
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