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vga_screenoff(3)	       Svgalib User Manual		vga_screenoff(3)

NAME
     vga_screenoff, vga_screenon - turn generation of the video signal on or off

SYNOPSIS
     #include <vga.h>

     int vga_screenoff(void);
     int vga_screenon(void);

DESCRIPTION
     The  functions  turn  the generation of the video signal on or off. On some
     video boards, SVGA memory access is faster when no video signal  is  gener-
     ated.  On	the other hand, not all boards allow to disable it (at least not
     in all modes).

     The functions always return 0 (on which  you  should  probably  not  really
     rely).

SEE ALSO
     svgalib(7),   vgagl(7),   libvga.config(5),   vga_init(3),  vga_setmode(3),
     vga_clear(3),

AUTHOR
     This manual page was  edited  by  Michael	Weller	<eowmob@exp-math.uni-es-
     sen.de>.  The  exact  source  of  the referenced function 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 orig-
     inal  author  and	will happily accept any additions or corrections to this
     first version of the svgalib manual.

Svgalib (>= 1.2.11)		  27 July 1997			vga_screenoff(3)

Want to link to this manual page? Use this URL:
<https://man.freebsd.org/cgi/man.cgi?query=vga_screenoff&sektion=3&manpath=FreeBSD+Ports+15.1.quarterly>

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