Provided by: libsvga1-dev_1.4.3-31_i386
vga_oktowrite - indicates whether the program has direct access to the
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.
svgalib(7), vgagl(7), libvga.config(5), bg_test(6),
This manual page was edited by Michael Weller <firstname.lastname@example.org-
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
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.