How do I access items created by a DelegateChoice inside a TableView?

[Kyle Hall]

I've spent countless hours trying to figure this out. I have an app that release print jobs for printing. Each job has a pages to print, copies to print, and cost per page. The user selects a printer and the cost in the table is updated from that calculation. If the user doesn't have enough funds to print to the printer, I want to disable the "Print" button. It seems simple enough but I've tried dozens of techniques, not of which have worked.

The simple solution seems to be to get that Button, and set its enabled value to false. However, I can't access that element by its id, so it must be out of scope.

Here is the ComboBox for printer selection: https://github.com/Libki/libki-print-station/blob/printer_selection/PrintRelease.qml#L142

Here is the Button that needs disabled: https://github.com/Libki/libki-print-station/blob/printer_selection/PrintRelease.qml#L223

Is there any way to get access to that button from the comboboxes onActivated method?

[J.Hilk]

@Kyle-Hall if you really need to iterate over all the contentItem you can do that:

TableView{
        id:tableView
        anchors.fill: parent
        Component.onCompleted:{
            for(var child in tableView.contentItem.children) {
                console.log(tableView.contentItem.children[child].text)
            }
        }

            model: 50
        delegate: Label{
            text: modelData
        }
    }

But I would probably go with a proper c++ model and do my logic there.

[Kyle Hall]

Thanks! I curious about the your last statement. This is my first QML application, can you point me to any documentation for creating C++ model to use in a QML app?

Thanks again!

[J.Hilk]

@Kyle-Hall sure, take a look here:

https://doc.qt.io/qt-5/qtquick-modelviewsdata-cppmodels.html

the interesting section is probably the one about QAbstractItemModel Subclass

---

actually, for your tableview case, there exists an actual Qt Example:

https://doc.qt.io/qt-5/qtquick-tableview-gameoflife-example.html

[Kyle Hall]

@J-Hilk thank you!

I did end up finding an alternative solution. I created a signal on my TableView and wired it to each button. Then, when the ComboBox changes, I call a function on the TableView that fires the signal, triggering the print buttons to reevaluate if they should be enabled or not.