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  1. Qt
  2. QTBUG-80025

Using States to set Loader sourceComponent leads to warning on application exit

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    • Icon: Bug Bug
    • Resolution: Unresolved
    • Icon: P3: Somewhat important P3: Somewhat important
    • None
    • 5.13.2
    • Quick: Core Declarative QML
    • None

      In our application, we're using States in a Loader.

      This leads to the engine complaining on exit:

       "There are still \"1\" items in the process of being created at engine destruction."

      The QML code to reproduce this can be boiled down to:

      import QtQuick 2.12
import QtQuick.Controls 2.12

ApplicationWindow {
    visible: true

    property bool stateActive: true

    Loader {
        id: loader
        asynchronous: true
        states: [
            State {
                when: stateActive
                PropertyChanges { target: loader; sourceComponent: mainComponent }
            }
        ]
    }
    Component {
        id: mainComponent
        Rectangle {

        }
    }
}

      The Error message itself isn't a big deal, but replacing those states with something else, or disabling the 'asynchronous' property lead to more strange errors appearing elsewhere. So i wanted to dig deeper and see if the answer to this could tell us something more.

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            qt.team.quick.subscriptions Qt Quick and Widgets Team
            strfry Jonathan Sieber
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              Created:
              Updated:

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