[Qt-qml] [Qt-interest] qml and real c++ application : QabstractItemModel ?

[Charley Bay]

Gregory spaketh:

> We use QML in a true life, complex application (a desktop email client
> with the interface fully done in QML)
>

I am *very* interested in this.  My QML use is also "heavy desktop".


> Over the course of the last few months, we tried a lot of different
> setups, until we found what works best for us:
>


> <snip, good overview of value-semantics model/object wrapping>,
>


> This setup may seem a little bit complicated, especially the fact that
> for each model we actually have two classes (Mail and MailObject,
> Contact and ContactObject, etc...), but thanks to some nice macros,
> it's quite easy to maintain it. The fact that the models are fully
> shared, copy-on-write classes that we can put in QLists or QHashes is
> a huge win, in my opinion, and really worth the effort.
>
> I think I'm going to write a blog post to give more details about this
> setup, if anyone is interested.
>

I'm *very* interested in such a blog post.  I've long wanted some kind of
QModelIndex type thing with BOTH a (void*,TYPE_ENUM) so I could reference
state, and have type information on the state referenced (the Trolls suggest
some QModel/QModelIndex work is in progress), to similarly provide
value-semantics for models with rich heterogeneous application-specific
types.

IMHO, this is ever-more-important when bridging to QML (from business
logic), due to the dynamic nature of QML, and the "loose parenting" that is
implied in QML (for very good reason).

BTW, I like your approach, and would like to learn more about it.


> (Also, if you want to try it out, you may sign-up for the beta:
> http://betterinbox.com - will be ready in a couple of weeks :)
>

Signed up!  I've been looking for a good one for *decades*, and it's about
time to put it in a really cool animated environment like is possible with
QML!  ;-))

--charley
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.qt.nokia.com/pipermail/qt-qml/attachments/20101228/b0645106/attachment.html