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Diffstat (limited to 'doc/src/declarative/extending.qdoc')
| -rw-r--r-- | doc/src/declarative/extending.qdoc | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/doc/src/declarative/extending.qdoc b/doc/src/declarative/extending.qdoc index 5b695f7..574b0b2 100644 --- a/doc/src/declarative/extending.qdoc +++ b/doc/src/declarative/extending.qdoc @@ -61,8 +61,11 @@ QML for their own independent use. The QML snippet shown above instantiates one \c Person instance and sets the \c name and \c shoeSize properties on it. Everything in QML ultimately comes down to either instantiating an object instance, or assigning a property a value. + QML relies heavily on Qt's meta object system and can only instantiate classes -that derive from QObject. +that derive from QObject. For visual element types, this will usually mean a subclass +of QDeclarativeItem; for models used with the view elements, a subclass of QAbstractItemModel; +and for abitrary objects with properties, a direct subclass of QObject. The QML engine has no intrinsic knowledge of any class types. Instead the programmer must register the C++ types with their corresponding QML names. |