---
name: "gl_expandfont"
section: "3"
platform: "linux"
package: "libsvga1-dev"
version: "1:1.4.3-33"
release: "Debian 7 (Wheezy)"
platforms: ["linux"]
url: "https://new.carta.tech/gl_expandfont"
---

# gl\_expandfont(3)

expand a packed pixel font

## NAME

gl\_expandfont - expand a packed pixel font

## SYNOPSIS

**#include \<vgagl.h\>**

**void gl\_expandfont(int** *fw***, int** *fh***, int** *c***, void \****sfp***, void \****dfp***);**

## DESCRIPTION

Convert a bit-per-pixel font at *sfp* with 256 characters of size (*fw*, *fh*) to an expanded font of character pixmaps, stored at *dfp* (size will be 256 \* *fw* \* *fw*  \* **BYTESPERPIXEL**). All non-zero pixels are set to color *c*.

It is possible to use non expanded fonts (but it is slower) when the **FONT\_COMPRESSED gl\_setwritemode**(3) flag is set.

## SEE ALSO

[**svgalib**(7)](/svgalib/7.md), [**vgagl**(7)](/vgagl/7.md), **svgalib.conf**(5), **testgl**(1), [**gl\_colorfont**(3)](/gl_colorfont/3.md), [**gl\_font8x8**(3)](/gl_font8x8/3.md), [**gl\_setfont**(3)](/gl_setfont/3.md), [**gl\_setfontcolors**(3)](/gl_setfontcolors/3.md), [**gl\_setwritemode**(3)](/gl_setwritemode/3.md), [**gl\_write**(3)](/gl_write/3.md), [**gl\_writen**(3)](/gl_writen/3.md).

## AUTHOR

This manual page was edited by Michael Weller \<eowmob@exp-math.uni-essen.de\>. The exact source of the referenced demo 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.