Uncreatable type
This warning category is spelled c{[uncreatable-type]} by qmllint.
Namespace must start with an upper case letter
What happened?
You used a QML object from a lower-case namespace.
Why is this bad?
The QML language forbids lower-case namespaces.
Example
import QtQuick as quick quick.Item { ... }
To fix the warning, rename the namespace to start with a capital letter:
import QtQuick as Quick Quick.Item { ... }
Singleton type is not creatable
What happened?
You tried to instantiate a QML object from a singleton type.
Why is this bad?
The QML language forbids instantiations of singletons.
Example
import QtQuick Item { Qt { // note: Qt is a singleton type id: qt } property string someProperty: qt.uiLanguage }
To fix the warning, use the singleton directly without instantiating it:
Type is not creatable
What happened?
You tried to instantiate a QML object from an uncreatable type.
Why is this bad?
Uncreatable types are specifically marked to forbid instantiations. You might be misusing a type that should only be used as an attached type or as an interface.
Example
Attached type misuse
import QtQuick Item { Keys { onPressed: function (key) { ... } } }
To fix the warning, use the Keys
attached type instead of instantiating it:
import QtQuick Item { Keys.onPressed: function (key) { ... } }
Interface misuse
import QtQuick Item { property PointerHandler myHandler: PointerHandler {} }
To fix the warning, use a more specific derived type like TapHandler
:
import QtQuick Item { property PointerHandler myHandler: TapHandler {} }
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