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Autor: Joel Roth
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Para: dng
Assunto: Re: [DNG] The Gtk+ Hodgepodge 'Object Model'
Hey Edward,

Well props to you for taking this on. Perhaps I will learn a
little C++ one day, but as far as I've heard, programmers
must be far more disciplined than we humble scripters.

I'm just reaching back to possibly revisit a bit of GUI
stuff, using Tk from perl. Plain graphics, but code is
well-beaten-upon and rugged.

A lot of developers will code an app in Python, and then
rewrite in C or C++ those hot routines that matter. But a
change in language wouldin't free you from the objects
which belong to your chosen graphic toolkit and their peculiar
logic.

I looked at Wx for a while, but way more code than Tk,
and what does it give me? Mainly just looks.

Have fun!

Joel


On Wed, Mar 16, 2016 at 08:41:47AM +0100, Edward Bartolo wrote:
> Hi,
>
> I am using 'Object Model' in this sense:
> The way object's data and functions are accessed which tghitly depends
> on how objects are designed, i.e. their architecture. By the latter I
> am NOT referring to object hierarchy.
>
> Having used in the past for several years other object models in
> Delphi (TM) and Lazarus (free/open), is making me realise that the
> object model employed in Delphi and Lazarus are far more logical and
> productive.
>
> I have been struggling to embrace Gtk+ and Qt object models in vain
> due to their counter-intuitive object models. Instead of using real
> tangible objects as a model they adopted to use an unnatural broken
> model for their widget architecture. So, to start my car, I need to
> create a starter object, plug it in into my car's engine, initialise
> its circuitry, and finally, if my car should start! This is also like
> having a detacheable digestive system, which one would plug in when
> one needs to digest food!
>
> Why not integrate all objects required by a widget in the first place?
> I can see an answer to this: to save memory space and processing
> resources so object can be trimmed to what is necessary. That is a
> good reason, but shouldn't a good widget designer create
> not-often-used objects when an attempt to use them is made. You may
> say that causes an access violation/segmentation fault. However, that
> can be avoided easily.
>
> Why shouldn't a Gtk+ coder be able to use something like this:
> gtkobjectinstance->helper-object->method()
>
> And
>
> gtkobjectinstance->helper-object->property = newpropertyvalue;
>
> ?
>
> I am perplexed, but it seems logic is not uniform.
>
> Edward
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--
Joel Roth