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List:       kde-devel
Subject:    Re: Communication between C++ and QML
From:       Espen =?ISO-8859-1?Q?Sand=F8y?= Hustad <espen () ehustad ! com>
Date:       2011-06-05 15:16:07
Message-ID: 1761024.fnlzXS4FQd () suspended
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On Friday 3. June 2011 23.12.03 Stefan Majewsky wrote:

Hi

> Hi,
> 
> snip
> 
> Now as far as I understand the (IMHO surprisingly sparse)

I didn't find the documentation sparse, but quite good. Have you 
looked at http://doc.qt.nokia.com/4.7/qtquick.html for instance?

> QtDeclarative module documentation, the main gateway for transferring
> information between C++ and QML is
> declarativeView->engine()->rootContext()->setContextObject(). QML
> retrieves data from the properties of this object and the subobjects
> which it references, and invokes via JavaScript functions in this
> object to propagate user input to the C++ layer.
> 
> Is this correct? If so, I get a feeling that it would require a
> potentially epic amount of boilerplate to make my already
> interface-agnostic data available to QML. Can I do anything to make
> this task simpler?

Have a look at http://doc.qt.nokia.com/4.7/qtbinding.html (
Specifically the part about defining new QML elements.), and 
http://doc.qt.nokia.com/4.7/qdeclarativeitem.html

I haven't looked at the code in KNetwalk, but is what you want to do possible 
by making AbstractGrid a subclass of QDeclarativeItem, and then creating an 
AbstractGrid object directly from QML?

HTH

Espen Hustad 
 
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