What's new in QtJambi 6.7.2

Bugfixes

Solved issue:

Exception when emitting QAbstractItemModel.dataChanged with default arguments
Auto-detected invokable method in subclass shadowing superclass property
Signal connections to lambda expression fail on queued emit
Type registration of QMetaType(QAbstractItemModel\*) incomplete when implicitly done during subclass registration
Running on Android again

New nullness support in QVariant:
- QVariant.fromValue() with argument null now converts to QVariant(Nullptr) (QVariant.setValue() similar)
- QVariant.NULL is an alias object represents QVariant(Nullptr)
- QVariant.nullable(Object) returns the given object if not null and QVariant.NULL otherwise
- QVariant.typedNullable<T>(Object,Class,QMetaType...) returns the given object if not null and a type-specific null alias object otherwise
New experimental features to be enabled by JVM argument -D<prop>=true or via System.setProperty("<prop>", "true"):
- io.qt.experimental.fast-jni enables improved gathering of JNI environment during native calls
- io.qt.experimental.fast-jni-for-overrides enables improved gathering of JNI environment during native virtual calls
- Following experimental features deal with the improvement of item model performance:
  - io.qt.experimental.item-model-cached-virtuals item model's rowCount() and columnCount() return values are cached to improve performance of item views.
  - io.qt.experimental.enable-invalid-modelindex-singleton invalid QModelIndex is represented by one single Java object.
  - io.qt.experimental.enable-ephemeral-modelindexes instead of calling virtual Java methods with a copy of a QModelIndex argument it submits an alias which is invalidated after use.

QtJambi 6.7.2 is not binary compatible to Qt 6.7.0. Please use Qt 6.7.1 or higher.