2:27 p.m.
Hi,
I am new to Linux and just installed Fedora 10 on my Machine. I wanted
to develop graphical libraries using C (not C++). Can anyone please
tell me if there is some place where I can download these graphical
Libraries. For example if I want to display a pixel on the screen can
someone please explain how I could do so using C
2:36 p.m.
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Fedora Linux schrieb:
Hi, I am new to Linux and just installed Fedora 10 on my Machine. I
wanted to develop graphical libraries using C (not C++). Can anyone
please tell me if there is some place where I can download these
graphical Libraries. For example if I want to display a pixel on
the screen can someone please explain how I could do so using C
It's nice, that you are interesting to develop linux applications.
Because you
want to use C as programming language, I would propose, that you may
use the gtk+
toolkit.
Because GNOME is the sttandard desktop of Fedora, you have only to
install the
gtk2-devel package on your system.
Unfortunately, I'm prefering Qt, so I can't give you forther
information, but I think
the documentation of gtk should help you to take your first steps.
Best Regards:
Jochen Schmitt
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8:30 p.m.
Fedora Linux wrote:
I am new to Linux and just installed Fedora 10 on my Machine. I
wanted
to develop graphical libraries using C (not C++). Can anyone please
tell me if there is some place where I can download these graphical
Libraries. For example if I want to display a pixel on the screen can
someone please explain how I could do so using C
Do you want to have full control over drawing (e.g. for a game) or do you
want to write an application which looks like common desktop applications
(with "widgets", i.e. controls like menus, buttons and textboxes)?
For the first thing, you'll want something like SDL or Allegro. Those are
the most frequently used ones, but there are some more libraries like that
in Fedora too.
For the second thing, something like GTK+ (which is in C) or Qt (it's C++,
but it replaces most of the C++ standard library with better-designed
classes, so you may end up actually liking it - I used to hate C++ and only
like C before I started coding with Qt and KDE). In both cases, you will
quickly notice that you need to think in a more object-oriented way. There
aren't really any modern GUI toolkits which are strictly procedural. GTK+
uses some convoluted ways to write object-oriented code in C (macros,
structures with function pointers in them etc.), Qt uses C++ for it. IMHO
Qt's solution is better (and yes, I have worked with both), but I'm
biased. :-) So as a plain C programmer, you'll have to get used to the OO
paradigm (and also to event-based programming) to do GUI programming,
objects and events are the main concepts there, whether it's in C++ or in
OO-style C (like GTK+).
Kevin Kofler
9:21 p.m.
He sounds like he's just starting out, and is still grasping object
oriented. GTK+ stopped being an option just yet -- it requires more
than competent knowledge of C (function pointers!) and object-oriented
design.
He sounds like he wants to do pixel manipulation, so that rules out
GUI toolkits. That sounds like a multimedia library right there. So
maybe it's time to learn C & SDL, but it will be a little difficult.
In addition, he probably hasn't compiled anything before, or used a
makefile or GCC. There's a lot of stuff that has to be reigned in for
a newbie linux programmer.
Try starting with the language. After he gets used to C, then he can
tackle a GUI toolkit like GTK.
Although personally, it would be much better if he was introduced to
GUIs and graphics libraries at a higher level. Trying to learn C
_and_ program graphics/interface is learning two moderately difficult
tricks at the same time.
I'd recommend starting higher level (use Python, Pygame - that is, SDL
for Python) -- learn how graphics libraries work first, and Python
provides an easy, gentle introduction to objects. Then, when you're
ready, learn C. After that, learn SDL & C.
You can google python, and google pygame, for details on how to use
them -- I believe Fedora has them in the
System->Preferences->Add/Remove Software.
You essentially have to learn the C language, also learn the library
(GTK or SDL), and possibly learn object-oriented programming
(mandatory for any GUI work). He needs to choose one and get
comfortable, and then start tackling the other. Python itself is a
very easy language to pick up on for a first-time programmer, since it
doesn't have the huge compile/make hurdle that C/C++ do, and once you
understand basic programming concepts, you could jump to something
harder.
Or go straight into it: learn how to use gcc, learn how to program C,
learn SDL. That's straight into the hard stuff, but much more direct.
The choice is yours.
3:17 p.m.
Thank you ***Jochen Schmitt, **Kevin Kofler* and *Jud Craft*,
I developed many commercial applications using UNIX(Interactive),
Fortran, "C", and Pascal some years ago, I'm comming back, and trying to
mount my working environment. At that time(first CD of Linux RED-HAT)
network was not so common, the environment was single machine, multiuser
serial board and *I*nter *P*rocess *C*ommunications, the beginning of C++.
I would like to port all these applications to linux(just for heating a
litle). I'm studing and have already got some tools like Advanced Linux
Programing(Mark Mitchell, Jeffrey Oldham and Alex Samuel), some books...,
and If you would like to help me, I would appreciate. Show me the way,
and take me for a "tools update ride", I am sure that I can contribute a lot
for the community. By the way I love Linux(*for me RED-HAT is the one, the
best*), and have a project in mind, and I'll invest on it, and all I said
before is necessary for the bases of my project. It is necessary to know
some environment to choose what best fits.
Ps1: I've 3(fast dual core, 4Gb, F10-x86_64, 800GB), fast internet(3Mb),
gtk2-devel and qt-devel packages installed.
Ps2: Do you see any problem for us to know each other by making a *
videoconferencing* via Skipe? Any sugestion?
I hope I can count on you.
Thanks,
Lucélio.
2009/1/16 Kevin Kofler <kevin.kofler(a)chello.at>
Fedora Linux wrote:
> I am new to Linux and just installed Fedora 10 on my Machine. I wanted
> to develop graphical libraries using C (not C++). Can anyone please
> tell me if there is some place where I can download these graphical
> Libraries. For example if I want to display a pixel on the screen can
> someone please explain how I could do so using C
Do you want to have full control over drawing (e.g. for a game) or do you
want to write an application which looks like common desktop applications
(with "widgets", i.e. controls like menus, buttons and textboxes)?
For the first thing, you'll want something like SDL or Allegro. Those are
the most frequently used ones, but there are some more libraries like that
in Fedora too.
For the second thing, something like GTK+ (which is in C) or Qt (it's C++,
but it replaces most of the C++ standard library with better-designed
classes, so you may end up actually liking it - I used to hate C++ and only
like C before I started coding with Qt and KDE). In both cases, you will
quickly notice that you need to think in a more object-oriented way. There
aren't really any modern GUI toolkits which are strictly procedural. GTK+
uses some convoluted ways to write object-oriented code in C (macros,
structures with function pointers in them etc.), Qt uses C++ for it. IMHO
Qt's solution is better (and yes, I have worked with both), but I'm
biased. :-) So as a plain C programmer, you'll have to get used to the OO
paradigm (and also to event-based programming) to do GUI programming,
objects and events are the main concepts there, whether it's in C++ or in
OO-style C (like GTK+).
Kevin Kofler
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fedora-devel-list(a)redhat.com
https://www.redhat.com/mailman/listinfo/fedora-devel-list
4:52 p.m.
Ok, Kevin Kofler,
Take it easy, we are at the same side ok?
I am learning how I should behave on this list, for me graphichs shows
more infos than command line, even if it last 1 minute or less.
Videoconferencing can last 1 minute or less, less time than you spend
writting an E-mail, even for busy persons. Let's give time to time.
No problem, I'm interested on any peace of information on *Fedora Linux
anyway*. In a war, when we succeed on the battle, we should not broke
enemys weapons, we should use it against him, study the weapon, and make a
better one.
Ps1: I said I'm Fedora(open SW), since the begining believe it, and I need
your help, ok?
Ps2: Don't keep *all* the help you have, share a litle part of it with us.
Thanks,
Lucélio.
2009/1/16 Kevin Kofler <kevin.kofler(a)chello.at>
Lucélio Gomes de Freitas wrote:
> Ps2: Do you see any problem for us to know each other by making a *
> videoconferencing* via Skipe?
Yes, 2 of them:
* I don't have the time for such a videoconference.
* I don't use Skype because it is proprietary software.
Sorry.
Kevin Kofler
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5588
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6 comments
5 participants
participants (5)
-
Fedora Linux -
Jochen Schmitt -
Jud Craft -
Kevin Kofler -
Lucélio Gomes de Freitas