Hello,
You would need to use QDeclarativeListProperty aka "list properties".
We have several documents on this already:
1)http://doc.qt.nokia.com/4.7-snapshot/gettingstartedqml.html#creating-qml-properties-in-a-c-class
2)http://doc.qt.nokia.com/4.7-snapshot/declarative-tutorials-extending-chapter5-listproperties.html
To summarize:
1)Your list item must inherit from a QObject, so don't use QString.
2)You MUST create functions to append to your list. size(), at(), clear()
functions aren't necessary.
3) Register the type into qml using qmlRegisterType() in C++.
Cheers,
Jerome P.
________________________________________
From: qt-qml-boun...@trolltech.com [qt-qml-boun...@trolltech.com] On Behalf Of
ext Toni Leppänen [toni.leppa...@gmail.com]
Sent: Thursday, September 30, 2010 12:01 PM
To: qt-qml@trolltech.com
Subject: [Qt-qml] Getting a list of strings from plugin
I'm trying to return a list of strings from a plugin. I'm getting an
error when trying to access the list:
foo.qml:13: TypeError: Result of expression 'list' [undefined] is not an object.
Can someone help me how to do this? Here's a simplified example what I've tried:
foo.h
-----
#include <QObject>
#include <QString>
#include <QDebug>
class Foo : public QObject
{
Q_OBJECT
public:
Foo(QObject * parent = 0);
~Foo();
Q_INVOKABLE QList<QString> getList();
};
foo.cpp
-------
#include "foo.h"
Foo::Foo(QObject * parent) : QObject(parent) {}
Foo::~Foo() {}
QList<QString> Foo::getList()
{
QList<QString> list;
list << "aa" << "bb";
return list;
}
foo.qml
-------
import Foo 1.0
import Qt 4.7
Item {
property variant list: []
Foo {
id: plugin
}
Component.onCompleted: {
list = plugin.getList();
console.debug(list[0]);
console.debug(list[1]);
}
}
Cheers,
Toni
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