Felisp
84436a5ae0
http://my.svgalib.org/svgalib/svgalib-1.9.25.tar.gz http://my.svgalib.org/svgalib/
64 lines
1.9 KiB
Groff
64 lines
1.9 KiB
Groff
.TH vga_getmodenumber 3 "8 April 1998" "Svgalib 1.3.0" "Svgalib User Manual"
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.SH NAME
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vga_getmodenumber \- return a number for the given video mode
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.SH SYNOPSIS
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.B "#include <vga.h>"
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.BI "int vga_getmodenumber(char *" name );
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.SH DESCRIPTION
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The function parses
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.I *name
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and tries to find a videomode corresponding on it.
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.I *name
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is parsed case insensitive and should be either an integer string just giving a
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mode number or
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consist of
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a capital
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.B G
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followed by the
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.BR "amount of x pixels" ,
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followed by a lower case
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.BR x ,
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followed by the
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.BR "amount of y pixels" ,
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followed by a lower case
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.BR x .
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Finally the number of different colors is appended. Here the shortcuts
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.BR 32K , 64K , 16M ", and " 16M4
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are used for 32768, 65536, and 16777216 are used. The last refers also to
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16777216 which are store in 4 bytes (highest address byte unused) for easier
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screen access.
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For unsupported values or the string "PROMPT" the value -1 is returned. Also a
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irritating error message is printed to stdout. This is used during parsing the
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.B SVGALIB_DEFAULT_MODE
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environment variable. Probably it should not be used for anything else.
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.SH EXAMPLE
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.BR vga_getmodenumber("G640x480x256") " returns " 10.
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.SH SEE ALSO
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.BR svgalib (7),
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.BR vgagl (7),
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.BR libvga.config (5),
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.BR vgatest (6),
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.BR vga_hasmode (3),
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.BR vga_modeinfo (3),
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.BR vga_setmode (3),
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.BR vga_lastmodenumber (3),
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.BR vga_getcurrentmode (3),
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.BR vga_getdefaultmode (3),
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.BR vga_getmodename (3)
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.SH AUTHOR
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This manual page was edited by Michael Weller <eowmob@exp-math.uni-essen.de>. The
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exact source of the referenced function as well as of the original documentation is
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unknown.
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It is very likely that both are at least to some extent are due to
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Harm Hanemaayer <H.Hanemaayer@inter.nl.net>.
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Occasionally this might be wrong. I hereby
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asked to be excused by the original author and will happily accept any additions or corrections
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to this first version of the svgalib manual.
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