Declares the decorated type to be a singleton in QML. This only takes effect if the type is a Q_OBJECT and is available in QML (by having a QmlElement decorator). The QQmlEngine will try to create a singleton instance using the type’s default constructor.
QML_IMPORT_NAME = "com.library.name" QML_IMPORT_MAJOR_VERSION = 1 QML_IMPORT_MINOR_VERSION = 0 # Optional @QmlElement @QmlSingleton class ClassForQml(QObject): # ...
The order of the decorators matters;
QmlSingleton needs to be preceded by