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gl_getcontext(3)	      Svgalib User Manual	      gl_getcontext(3)

NAME
       gl_getcontext, currentcontext - 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 current-
       context;

       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 fu-
       ture 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
       svgalib(7),   vgagl(7),	 svgalib.conf(5),   threedkit(7),   testgl(1),
       plane(1), wrapdemo(1), gl_allocatecontext(3), gl_copyboxfromcontext(3),
       gl_copyboxtocontext(3), gl_freecontext(3), gl_setcontext(3), gl_setcon-
       textheight(3), gl_setcontextvga(3), gl_setcontextvgavirtual(3), gl_set-
       contextvirtual(3), gl_setcontextwidth(3).

AUTHOR
       This  manual page was edited by Michael Weller <eowmob@exp-math.uni-es-
       sen.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.

Svgalib	(>= 1.2.11)		  2 Aug	1997		      gl_getcontext(3)

NAME | SYNOPSIS | DESCRIPTION | SEE ALSO | AUTHOR

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