[Qt-interest] QT Property system ?

[Thiago Macieira]

Em Terça-feira 25 Agosto 2009, às 19:43:54, Paul Miller escreveu:
> Patric wrote:
> > Yes, ok, the question rather was "when to use them instead of simple
> > member".
> > As I understand, these are just like class member, but we can access them
> > even through a pointer to base class.
> > And another advantage is that we can add properties at runtime.
> >
> > Is that correct ? What other advantages are there ?
> 
> You can do introspection.
> You can access properties in scripting with QtScript.
> You can access properties from Javascript inside a QWebView if you've
> attached your objects to the DOM.

You can access properties in QML as well, use them and set their values.
You can modify the properties using the Qt Animation Framework.
You can export those properties via QtDBus as well.

If you make your class a widget in Qt Designer, it will also allow the user to 
edit the properties there.

You can set properties via setProperty(), retrieve via property() and find out 
about them in the metaObject(). (this is why all the above work)

-- 
Thiago Macieira - thiago.macieira (AT) nokia.com
  Senior Product Manager - Nokia, Qt Development Frameworks
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