Provided by: libsvga1-dev_1.4.3-31_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.