diff options
Diffstat (limited to 'examples/qml/doc/src/qml-extending.qdoc')
| -rw-r--r-- | examples/qml/doc/src/qml-extending.qdoc | 17 |
1 files changed, 8 insertions, 9 deletions
diff --git a/examples/qml/doc/src/qml-extending.qdoc b/examples/qml/doc/src/qml-extending.qdoc index e56dd90dd7..723e470d45 100644 --- a/examples/qml/doc/src/qml-extending.qdoc +++ b/examples/qml/doc/src/qml-extending.qdoc @@ -52,10 +52,6 @@ type, the C++ class can be named differently, or appear in a namespace. The Person class implementation is quite basic. The property accessors simply return members of the object instance. -The \c main.cpp file also calls the \c qmlRegisterType() function to -register the \c Person type with QML as a type in the People library version 1.0, -and defines the mapping between the C++ and QML class names. - \section1 Running the Example The main.cpp file in the example includes a simple shell application that @@ -73,13 +69,15 @@ This example builds on: \li \l {Extending QML - Adding Types Example} \endlist -Shows how to use \l {QQmlEngine::}{qmlRegisterExtendedType()} to provide an +Shows how to use \l {QML_EXTENDED} to provide an \l {Registering Extension Objects}{extension object} to a \l QLineEdit without modifying or subclassing it. -Firstly, the LineEditExtension class is registered with the QML system as an extension of QLineEdit: +Firstly, the LineEditExtension class is registered with the QML system as an +extension of QLineEdit. We declare a foreign type to do this as we cannot modify +Qt's internal QLineEdit class. -\snippet referenceexamples/extended/main.cpp 0 +\snippet referenceexamples/extended/lineedit.h 0 The QML engine then instantiates a \l QLineEdit: @@ -178,11 +176,12 @@ previous example. However, as we have repurposed the People class as a common base for Boy and Girl, we want to prevent it from being instantiated from QML directly - an explicit Boy or Girl should be instantiated instead. -\snippet referenceexamples/coercion/main.cpp 0 +\snippet referenceexamples/coercion/person.h 0 While we want to disallow instantiating Person from within QML, it still needs to be registered with the QML engine, so that it can be used as a property type -and other types can be coerced to it. +and other types can be coerced to it. This is what the QML_UNCREATABLE macro +does. \section2 Define Boy and Girl |