Communication between QML and Julia

Specific Domains Visualization
1

Hi, I’m trying to make a light UI with QML but I didn’t find the way to call Julia functions from QML with a vector as parameter and to use this vector in Julia. This example calls the Julia function fct1 when a button, opened in a window, is pressed.
In julia :

using QML
using Qt5QuickControls_jll
using Qt5QuickControls2_jll

function fct1(var1)
    println(typeof(var1))
    println(var1)
    println(var1[1])
end

@qmlfunction fct1
loadqml("returnVector.qml")
exec()

In qml :

import QtQuick 2.2
import QtQuick.Dialogs 1.0
import QtQuick.Controls 2.15
import QtQuick.Layouts 1.0
import org.julialang 1.0


ApplicationWindow {
  id: appWindow
  visible: true

    Item {
        id: cst
        property var vect1: [0,0.5,1]
    }

    Button {
        //Layout.alignment: Qt.AlignCenter
        text: qsTr("click")
        onClicked: { Julia.fct1(cst.vect1) }
    }
}

I obtain a vector of type QVariant[QVariant of type Int32 with value 0, ...] and I didn’t find a way to transform it in a usable form in Julia. And I’m not even able to say if I’m completely wrong or if it’s just a little trick.

If someone has an idea, or could explain what precautions we have to take to pass from QML world to Julia world, I’m very interested :slight_smile:
Thanks !