debian man page for currentcontext

Query: currentcontext

OS: debian

Section: 3

Format: Original Unix Latex Style Formatted with HTML and a Horizontal Scroll Bar

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 currentcontext; However, simply access single elements in this structure with the macros given in vgagl(7) but do not copy currentcontext in another struc- ture. 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
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_setcontextheight(3), gl_setcontextvga(3), gl_setcontextvgavirtual(3), gl_setcontextvirtual(3), gl_setcontextwidth(3).
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. Svgalib (>;= 1.2.11) 2 Aug 1997 gl_getcontext(3)
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