MessageDialog has no states: property?

[ars1614]

I am trying to use only one MessageDialog for all the applications warnings, errors... Each time I open it, I rewrite everything, but I wondered if there is no such a property like in others controls to do it easier.

Thanks!

[A Former User]

MessageDialog has no states: property

That's because dialogs don't inherit from Item. But you can make your own dialog that extends MessageDialog. You can then add your own states property with StateGroup QML Type.

[ars1614]

@Wieland I have tried what you said and I am having this error: Cannot assign to non-existent default property at line StateGroup.
This is my code:

MessageDialog {
        id: msgDialog

        icon: StandardIcon.Warning;
        standardButtons: StandardButton.Ok

        StateGroup {
            id: msgDialogStates
            states: [
                State {
                    name: "ActionsDialog"
                    PropertyChanges {
                        target: msgDialog
                        title: qsTr("Actions Error")
                        text: qsTr("Message.")
                    }

                }, State {
                    name: "PropertiesDialog"
                    PropertyChanges {
                        target: msgDialog
                        title: qsTr("Properties Error");
                        text: qsTr("Another.")
                    }

                }
            ]
        }
    }

The lines with the properties: title, text, icon and standardButtons are in red as I mencioned in another post.