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| |
| #include "qstyleplugin.h" |
| #include "qstyle.h" |
| |
| QT_BEGIN_NAMESPACE |
| |
| /*! |
| \class QStylePlugin |
| \brief The QStylePlugin class provides an abstract base for custom QStyle plugins. |
| |
| \ingroup plugins |
| \inmodule QtWidgets |
| |
| QStylePlugin is a simple plugin interface that makes it easy |
| to create custom styles that can be loaded dynamically into |
| applications using the QStyleFactory class. |
| |
| Writing a style plugin is achieved by subclassing this base class, |
| reimplementing the pure virtual create() function, and |
| exporting the class using the Q_PLUGIN_METADATA() macro. |
| |
| \snippet qstyleplugin/main.cpp 0 |
| |
| The json metadata file \c mystyleplugin.json for the plugin needs |
| to contain information about the names of the styles the plugins |
| supports as follows: |
| |
| \quotefile qstyleplugin/mystyleplugin.json |
| |
| See \l {How to Create Qt Plugins} for details. |
| |
| \sa QStyleFactory, QStyle |
| */ |
| |
| /*! |
| \fn QStyle *QStylePlugin::create(const QString& key) |
| |
| Creates and returns a QStyle object for the given style \a key. |
| If a plugin cannot create a style, it should return 0 instead. |
| |
| The style key is usually the class name of the required |
| style. Note that the keys are case insensitive. For example: |
| |
| \snippet qstyleplugin/main.cpp 1 |
| */ |
| |
| /*! |
| Constructs a style plugin with the given \a parent. |
| |
| Note that this constructor is invoked automatically by the |
| moc generated code that exports the plugin, so there is no need for calling it |
| explicitly. |
| */ |
| QStylePlugin::QStylePlugin(QObject *parent) |
| : QObject(parent) |
| { |
| } |
| |
| /*! |
| Destroys the style plugin. |
| |
| Note that Qt destroys a plugin automatically when it is no longer |
| used, so there is no need for calling the destructor explicitly. |
| */ |
| QStylePlugin::~QStylePlugin() |
| { |
| } |
| |
| QT_END_NAMESPACE |
| |
| #include "moc_qstyleplugin.cpp" |