i am a new user.
here the systems contains redhat linux version 9.0

i want to know how to draw a line using a c program
in turbo C it is possible by including header file <graphics.h>

i don't see any such header file in c compiler for this linux system.

i downloaded one file gd-1.8.4.tar.zip.

how i install it. or it the write way of doing.
are the commands are same as in turbo C.

i will be thankful to u if u give guidelines to it
thank you.

Take a look at SDL, which is similar to DirectDraw. Further options are GTK (more complicated, but also mightier than SDL, with Anjuta IDE you'll have a programming environment similar to Visual Basic. This is gnomes graphical library), QT (like GTK, but not really free. This is KDEs graphical library), or Xlib (which is the layer under the first three kits - fastest, but also most complicated, really a headache).

If you only want to draw a line, I'd say SDL is the way to go.

I believe RH 9 comes with the development packages for all of the four kits. If you installed them, you should find documentation for each somewhere under /usr/share/doc, and google should come up with tons of docs for them, too.

HTH

You can install svgalib from (http://svgalib.org) if you want to draw graphics without the need for X windows.
Svgalib has a nice library, namely vgagl, that provides you with basic drawing primitives.
I have written a wrapper library for svgalib in C that makes graphics management easier. You can mail me at josedsilva@yahoo.com for the latest source code.

Jose,

Do you have a lot of trouble with the video set modes in SVGALIB? I have very limited screen choices. Example is 320x200 mode. It locks my system up. I actually can only run at screen 10 (not sure of the mode). Other programs in Linux use 320x200 with no problem. Is there a set up that maybe I'm not doing? Do I have to do a "get command" for something first?

Thanks
Ace

[1] http://www.dosbox.com/download.php?main=1
Download dosbox from here ... i would prefer source compilation
[
DosBox is ment to emulate Old DOS operating system .. and of
course .. the main motive is to run DOS application .. which
include games ... etc .. if that is the case ... why not turboc++
3.0 for dos
]

[2] Download TurboC++ 3.0 from here
http://www.vetusware.com/download/Bo...%203.0/?id=163

[3] Compile the code forDOSBox which u should be having SDL
installed for proper graphics drawing ( its ment for DosBox)
AFA you are concerned u dnt have to bother about SDL drawing.
DBOx will handle it .. u can continue with ur c graphics
functions

[4] After installing dosbox
Create a directory C: in ur home and inside C: ->mkdir Temp
extract the turboc++ contents to /home/yourname/C:/Temp

[5] From the terminal run DoxBox
type the following in the prompt shown below
Z:>mount c ~/C:
If u have mounted properly it will say
[ Drive c has been mounted ....... ]

[6] Type this
Z:>C:

[7] Then cd to Temp run the installation wizard
mostly-> install.exe

[8] You are done ...

[9] After installtion if the Directory's are C:\TC\Bin
then cd to TC\bin and type TC ...

[10] After seeing the IDE go to the [options] ->[Linker]->[Libraries] in the window seen enable Graphics Libraries ...

[11] You are done

Have you configured libvga.config in /etc/vga/ correctly?
You may need to install svgalib with the VESA support enabled.
Can you mail me a copy of the installation Makefile.cfg and libvga.config with the following info:
1. Graphic card model no. and chipset, monitor info. (with Vertical and Horizontal scan freq ranges).
2. Mouse information
3. Linux kernel and PC hardware information.

If I remember correctly I don't think Red Hat 9 came with SDL Devel packages. So freshrpms you need to be.

SlackBunny,

Thanks for the info. I haven't been able to find a DOS Box for Slack. This is good info. I have M$ Quick C for DOS and for fun am trying to convert some of my old programs to Linux, but couldn't find anything close to the previous graphics commands. SVGALib looks the closest I've seen so far so I'm going to try it.

Thanks Again,

Ace Balckwell

My pleasure

DosBOx for Slackware 12.0
http://www.linuxpackages.net/search_...osbox&ver=12.0
SDL for Slackware 12.0
http://www.libsdl.org/release/SDL-1.2.13.tar.gz
Above link is Source code .of sdl ..

My personal advice is to do source compilation for which ever package u plan to install