diff options
Diffstat (limited to 'src/declarative/qml/qdeclarativecomponent.cpp')
-rw-r--r-- | src/declarative/qml/qdeclarativecomponent.cpp | 37 |
1 files changed, 34 insertions, 3 deletions
diff --git a/src/declarative/qml/qdeclarativecomponent.cpp b/src/declarative/qml/qdeclarativecomponent.cpp index 9d3032c..8b013fe 100644 --- a/src/declarative/qml/qdeclarativecomponent.cpp +++ b/src/declarative/qml/qdeclarativecomponent.cpp @@ -68,14 +68,44 @@ class QByteArray; /*! \class QDeclarativeComponent \since 4.7 - \brief The QDeclarativeComponent class encapsulates a QML component description. + \brief The QDeclarativeComponent class encapsulates a QML component definition. \mainclass + + Components are reusable, encapsulated QML elements with well-defined interfaces. + They are often defined in \l {qdeclarativedocuments.html}{Component Files}. + + A QDeclarativeComponent instance can be created from a QML file. + For example, if there is a \c main.qml file like this: + + \qml + import Qt 4.7 + + Item { + width: 200 + height: 200 + } + \endqml + + The following code loads this QML file as a component, creates an instance of + this component using create(), and then queries the \l Item's \l {Item::}{width} + value: + + \code + QDeclarativeEngine *engine = new QDeclarativeEngine; + QDeclarativeComponent component(engine, QUrl::fromLocalFile("main.qml")); + + QObject *myObject = component.create(); + QDeclarativeItem *item = qobject_cast<QDeclarativeItem*>(myObject); + int width = item->width(); + \endcode + + \sa {Using QML in C++ Applications} */ /*! \qmlclass Component QDeclarativeComponent \since 4.7 - \brief The Component element encapsulates a QML component description. + \brief The Component element encapsulates a QML component definition. Components are reusable, encapsulated QML elements with well-defined interfaces. They are often defined in \l {qdeclarativedocuments.html}{Component Files}. @@ -448,7 +478,8 @@ void QDeclarativeComponent::loadUrl(const QUrl &url) d->clear(); - if (url.isRelative() && !url.isEmpty()) + if ((url.isRelative() && !url.isEmpty()) + || url.scheme() == QLatin1String("file")) // Workaround QTBUG-11929 d->url = d->engine->baseUrl().resolved(url); else d->url = url; |