Provided by: libsvga1-dev_1.4.3-27ubuntu1_i386 bug

NAME

       vga_oktowrite  - indicates whether the program has direct access to the
       SVGA

SYNOPSIS

       #include <vga.h>

       int vga_oktowrite(void);

DESCRIPTION

       Indicates whether the program is in the console  currently  visible  on
       the  screen,  that  is,  whether  it is OK to write to video memory (if
       running in the background has been allowed with  the  function  above).
       Note  that  this is not entirely safe, since a console switch interrupt
       may occur during a video operation. It is best to avoid this  function.

       Usually  your  program  will  be suspended when it has no access to the
       screen but see vga_runinbackground(3) for an alternative.

SEE ALSO

       svgalib(7),       vgagl(7),        libvga.config(5),        bg_test(6),
       vga_runinbackground(3), vga_runinbackground_version(3)

AUTHOR

       This  manual  page  was  edited by Michael Weller <eowmob@exp-math.uni-
       essen.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
       original author and will happily accept any additions or corrections to
       this first version of the svgalib manual.