problem to display a QStringList in a model in a ComboBox

cosmoff

Hello everybody

first of all, my comboBox works because when I run my app, I see my QStringList in my ComboBox. I precise that my QStringList is filled thanks to a server which send the paramaters for the QStringList.
The problem appears when I switch off and switch on the server. When I switch off the server, I empty my QStringList with a clear(). And When I switch on my server, I retrieve
correctly my data (QStringList is well filled) but The probleme come from the QML. the Qml do not run the methode "selectedTechno"
which allow to retrieve a pointer. When I run the app, Qml calls this methode but never when I restart my server. Is it normal ?

this is my combobox :

ComboBox{
                    model:  model.selectedTechno ? model.selectedTechno.qstringList : null


                    anchors {
                        left: parent.left
                    }

                    width: 0.5 * parent.width
                }

            thanks for your help.

IntruderExcluder

This is because nothing changed for QML. Your string list is the same object before and after refilling. There is two ways to do what you want:

Use QStringListModel istead of QStringList;
Define your string list as QObject property via Q_PROPERTY with proper notification about changes.

cosmoff

I already done
Q_PROPERTY ( QStringList qstringList READ qstringList NOTIFY qstringListChanged ) and it does not work. I think
the problem come from the fonction selectedTechno() because it is never called

IntruderExcluder

If selectedTechno is QObject pointer exposed to QML you can try this:

...
ComboBox {
    id: cbox
    ...
}

Connections {
    target: model.selectedTechno
    onQstringListChanged: {
        cbox.model = model.selectedTechno.qstringList;
    }
}

Hope this helps, but more info required.