[PyQt] PyQt support for Qt 4.7

[Andreas Pakulat]

On 08.10.10 01:08:08, Giovanni Bajo wrote:
> On Thu, 07 Oct 2010 16:34:41 +0100, Phil Thompson
> <phil at riverbankcomputing.com> wrote:
> > On Thu, 7 Oct 2010 00:35:16 +0200, David Boddie <david at boddie.org.uk>
> > wrote:
> >> On Tue Oct 5 09:36:49 BST 2010, Phil Thompson wrote:
> >> 
> >>> The minehunt example only seems to need support for lists of QObjects.
> >>> Are
> >>> there any other examples anywhere that have different use cases?
> >> 
> >> I guess that's more or less what it is, though it needs something extra
> > to
> >> make the QML engine aware of the new TileData type, used as a property
> > type
> >> in the MinehuntGame class, and used as the model that holds the tile
> > data
> >> in
> >> the game. If you can figure out a way to expose homogeneous Python
> lists
> > as
> >> QDeclarativeListProperty containers then that would be cool.
> > 
> > Done that.
> > 
> >> Looking through the examples, there are places where qmlRegisterType is
> >> used
> >> to add C++ classes to QML as new item types. The "Writing QML
> extensions
> >> with
> >> C++" tutorial in examples/declarative/tutorials/extending is one of
> > these.
> > 
> > ...and there we hit the showstopper.
> > 
> > It looks like it is not possible to publish Python types to QML (and use
> > the QML import statement) because QML uses a QObject's staticMetaObject
> > instead of calling metaObject(). That automatically limits it to types
> > known at compile time and no way to inject dynamic meta-objects created
> at
> > run time.
> 
> I think that's because they need to construct new instances for that type
> at runtime. I can't see how an object could be instantiated through a
> pointer to its QMetaObject instance (let alone a *dynamic* meta object).

Even though I might just show that I don't have a real clue about what
you're talking, but how about QMetaObject::newInstance()? At least by the
API docs it sounds as that function would allow to create a new instance
with just a QMetaObject pointer. (as long as Q_INVOKEABLE is used for at
least 1 constructor).

Andreas

-- 
You are so boring that when I see you my feet go to sleep.