vga_getdefaultmode(3) Svgalib User Manual vga_getdefaultmode(3)NAME
vga_getdefaultmode - returns the default graphics mode number
SYNOPSIS
#include <vga.h>
int vga_getdefaultmode(void);
DESCRIPTION
Returns the default graphics mode number from the SVGALIB_DEFAULT_MODE environment variable; -1 if undefined. The environment variable can
either be a mode number or a mode name. See vga_setmode(3) for a list of predefined return values and their meaning. The mode names which
can be used in the environment are those used by vga_getmodename(3) and vga_getmodenumber(3).
Whenever your application has no special need for a given mode you should always try to honour this setting for consistency among svgalib
applications.
SEE ALSO svgalib(7), vgagl(7), libvga.config(5), vgatest(6), vga_hasmode(3), vga_modeinfo(3), vga_setmode(3), vga_getcurrentmode(3), vga_lastmode-
number(3), vga_getmodename(3), vga_getmodenumber(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.
Svgalib 1.3.0 8 April 1998 vga_getdefaultmode(3)
Check Out this Related Man Page
vga_getmodenumber(3) Svgalib User Manual vga_getmodenumber(3)NAME
vga_getmodenumber - return a number for the given video mode
SYNOPSIS
#include <vga.h>
int vga_getmodenumber(char *name);
DESCRIPTION
The function parses *name and tries to find a videomode corresponding on it. *name is parsed case insensitive and should be either an
integer string just giving a mode number or consist of a capital G followed by the amount of x pixels, followed by a lower case x, followed
by the amount of y pixels, followed by a lower case x. Finally the number of different colors is appended. Here the shortcuts 32K,64K,16M,
and 16M4 are used for 32768, 65536, and 16777216 are used. The last refers also to 16777216 which are store in 4 bytes (highest address
byte unused) for easier screen access.
For unsupported values or the string "PROMPT" the value -1 is returned. Also a irritating error message is printed to stdout. This is used
during parsing the SVGALIB_DEFAULT_MODE environment variable. Probably it should not be used for anything else.
EXAMPLE
vga_getmodenumber("G640x480x256") returns 10.
SEE ALSO svgalib(7), vgagl(7), libvga.config(5), vgatest(6), vga_hasmode(3), vga_modeinfo(3), vga_setmode(3), vga_lastmodenumber(3), vga_getcurrent-
mode(3), vga_getdefaultmode(3), vga_getmodename(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.
Svgalib 1.3.0 8 April 1998 vga_getmodenumber(3)
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