Uncreatable type

This warning category is spelled [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.

范例

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.

范例

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:

import QtQuick
Item {
    property string someProperty: Qt.uiLanguage
}
					

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.

范例

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 {}
}
					

内容

1. Namespace must start with an upper case letter

2. What happened?

3. Why is this bad?

4. 范例

5. Singleton type is not creatable

6. What happened?

7. Why is this bad?

8. 范例

9. Type is not creatable

10. What happened?

11. Why is this bad?

12. 范例