Building a Point of Sale or (How does X work?)

[Valter Nogueira]

I don't need to know much about X - but I think it is weird not knowing
anything about it. I know a lot about win32 and it proved to be very useful
even when programming in VB.

I intend to know a lot about Ubuntu. I am an above the average Linux user -
but that is not enough yet.

Well just to contribute, I found a wikibook that led me a step further:
http://en.wikibooks.org/wiki/X_Window_Programming

Valter

2009/10/16 Karl F. Larsen <klarsen1 at gmail.com>

> Valter Nogueira wrote:
> > Today I went to the supermakert and while wainting in line, the
> > point-of-sale frozen.It died.
> >
> > Well, it could be disturbing for most people - but I saw the operator
> > rebooting software and it was Linux. I could not realize the distro and I
> > can say that it loads tons of services during start-up (more than I am
> used
> > to see)
>
>        Ubuntu can and I expect does do the same thing. You don't
> need to know a lot about X windows, but you need to know how
> to use it.
>
>
> >
> > After booting, with no login nor any kind of visible window manager,
> > appeared the graphical user interface of POS and continued from the last
> > product registered.
> >
>
>        The local Unix connected to the Server for the store. This is
> pretty easy to do. You use System - Preference - startup
> programs and perhaps Keyboard Shortcuts. It takes time to set
> up and that is what the store IT people do.
>
> > OK. It is a long, long history. Well, what I want to know is what is the
> > best way to produce a effect like that in my distro of choice (Ubuntu)?
> >
> > Tons of options suddenly crossed my mind. A Gnome/GTK program using
> > full-screen started at gnome starting. A Java/Swing Application, a xfce
> > application (if such thing exists) and suddenly I figured out that I
> don't
> > have a clear idea of how X works at all.
> >
> > In Win32 that is just one way to do anything: Win API and Petzold way.
> > Anything else (including .NET) are just layers between app and
> gdi/kernel.
> >
> > So, what is the learning path to programming X? Could anyone send me a
> > direction?
> >
> > Thanks
> >
> > Valter
> >
> >       You do not need to know much at all about X windows. Learn to use
> Ubuntu.
>
>
> 73 Karl
>
>
>
> --
>
>        Karl F. Larsen, AKA K5DI
>        Linux User
>        #450462   http://counter.li.org.
>         Key ID = 3951B48D
>
>
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