[Qt-qml] QML: DataModel

[Gregory Schlomoff]

You should probably create some slots on C++ that interact with your
QAbstractItemModel, then call those slots from QML.

The rule is that QML can only call slots or Q_INVOKABLE, and not normal methods.

On Tue, Jul 13, 2010 at 4:40 AM, Almo Nito <AlmoNito at gmx.de> wrote:
> Hello There,
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> I played around with QML today and ended in trying on of the examples in the
> docs that actually tried to use the QAbstractItemModel as a file browser.
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> So I copy-pasted the source and tried out their example with the result that
> the root directory is showing up (the “/”) and the onClick handler is
> working as well,
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> The only problem is that it don’t seems possible to brows the File system,
> any ideas on that one?
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> QML:
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> import Qt 4.7
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> import "ressource" as Ressources
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> Rectangle {
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>     id: background
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>     width: 770;
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>     height: 480;
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>     color: "lightgray"
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>     ListView {
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>         id: view
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>         width: 300
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>         height: 400
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>         model: VisualDataModel {
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>             model: myModel
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>             delegate: Rectangle {
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>                 width: 200; height: 25
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>                 Text { text: filePath }
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>                 MouseArea {
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>                     anchors.fill: parent
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>                     onClicked: {
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>                         if (view.model.hasModelChildren) {
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>                             console.log("childs")
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>                             view.model.rootIndex = model.modelIndex(index)
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>                         }
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>                         else {
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>                             console.log("NoChilds")
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>                         }
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>                     }
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>                 }
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>             }
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>         }
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>     }
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> }
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> C++:
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> QDeclarativeView *view = new QDeclarativeView(this);
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>     QFileSystemModel *modelDir = new QFileSystemModel;
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>     modelDir->setRootPath("/home");
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>     ui->treeView->setModel(modelDir);
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>     QDeclarativeContext *ctxt = view->rootContext();
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>     ctxt->setContextProperty("myModel",modelDir);
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>     QUrl url = QUrl::fromLocalFile(“browsertest.qml");
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>     view->setSource(url);
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>     view->show();
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> Further in the C++ I have anoter issue, if I set the RootDir as in
> modelDir->setRootPath("/home"); it seems not to do any changes at all.
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> Any Ideas?
>
> Thanks!
>
> Almo
>
>
>
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