import javafx.beans.property.SimpleStringProperty
import tornadofx.App
import tornadofx.View
import tornadofx.combobox
import tornadofx.observable

class MyApp: App(MyView::class)

class MyView: View() {
    override val root = combobox(MyModel.selectedItemProperty) {
        items = MyModel.myList
    }
}

object MyModel {
    val selectedItemProperty = SimpleStringProperty()
    val myList = listOf("Alpha", "Beta", "Gamma", "Delta", "Epsilon").observable()
}