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- Path: sparky!uunet!usc!sdd.hp.com!uakari.primate.wisc.edu!ames!agate!boulder!juliet!drew
- From: drew@juliet.cs.colorado.edu (Drew Eckhardt)
- Newsgroups: comp.os.linux
- Subject: Re: Graphics library and mouse support in GCC ?
- Keywords: Graphics GCC
- Message-ID: <1992Jul28.030054.6678@colorado.edu>
- Date: 28 Jul 92 03:00:54 GMT
- References: <bibhas.712287107@femto.engr.mun.ca>
- Sender: news@colorado.edu (The Daily Planet)
- Organization: University of Colorado at Boulder
- Lines: 49
- Nntp-Posting-Host: juliet.cs.colorado.edu
-
- In article <bibhas.712287107@femto.engr.mun.ca> bibhas@pico.engr.mun.ca (Bibhas Bhattacharya) writes:
- >I will be very much interested to know the graphics library and mouse
- >support with GCC. What could be the equivalent of the QUICK C interrupt
-
- A vgalib is available from the FTP sites that supports VGA/SVGA graphics under
- Linux. You can also use X (if you have suitable hardware) and any of the
- X libraries. MGR is available too.
-
- As far as mouse support, one of the windowing systems will handle that for
- you, otherwise your on your own. The code in the selection package, or
- MGR will show you how to digest the packets from the mouse.
-
- >caller function int86() and others.
-
- There is none. The DOS/BIOS model is completely different from the Unix
- paradigm. All system calls are interfaced by name through library
- routines. You want to write to a device, call write(2). You want to do
- non-blocking I/O, use select(2). Anything in section 2 of the manual is a
- syscall, and is analogous to DOS/BIOS intXX's.
-
- If you were persistant, you could bypass the library interface and
- use the native syscall mechanism, but this would be messy and non
- portable.
-
- Every Unix understands read(), nobody else will understand the int 0x80
- Linux uses for the syscall interface, or the call gates that other i386
- Unices may use.
-
- You cannot call BIOS routines from protected mode, and without DOS running,
- you can't make any DOS calls.
-
- If you want to program under Linux, the GCC libraries are ANSI C, plus
- a standard Unix unistd lib that is a hybrid of BSD/SYSV/POSIX. Libc, libm,
- and friends will be documented in any 'C' programming book, a Unix programming
- book will cover the unix specific syscalls.
-
- Also, assorted libraries like dbm, and crypt are available.
-
- There are inumerable books on programming X11 on levels ranging from
- raw xlib or xt, to the Widget sets and C++ class libraries.
-
- MGR has man pages, as far as the Linux specific things like vgalib,
- some documentation is there, but you're pretty much on your own.
-
- Linux was developed by hacker types
- for hackertypes. Hackers write in awk, yacc, and even machine code
- (hexadecimal when necessary), not english, so the source code is the
- documentation, and something readable to mortals is not always readily
- available.
-