QSqlDriverPlugin Class ReferenceThe QSqlDriverPlugin class provides an abstract base for custom QSqlDriver plugins. Далее... #include <QSqlDriverPlugin> Унаследован от: QObject. Открытые функции
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Подробное описаниеThe QSqlDriverPlugin class provides an abstract base for custom QSqlDriver plugins. The SQL driver plugin is a simple plugin interface that makes it easy to create your own SQL driver plugins that can be loaded dynamically by Qt. Writing a SQL plugin is achieved by subclassing this base class, reimplementing the pure virtual functions keys() and create(), and exporting the class with the Q_EXPORT_PLUGIN2() macro. See the SQL plugins that come with Qt for example implementations (in the plugins/src/sqldrivers subdirectory of the source distribution). See also How to Create Qt Plugins. Описание функций-членовQSqlDriverPlugin::QSqlDriverPlugin ( QObject * parent = 0 )Constructs a SQL driver plugin and sets the parent to parent. This is invoked automatically by the Q_EXPORT_PLUGIN2() macro. QSqlDriverPlugin::~QSqlDriverPlugin ()Destroys the SQL driver plugin. You never have to call this explicitly. Qt destroys a plugin automatically when it is no longer used. QSqlDriver * QSqlDriverPlugin::create ( const QString & key ) [pure virtual]Creates and returns a QSqlDriver object for the driver called key. The driver key is usually the class name of the required driver. Keys are case sensitive. See also keys(). QStringList QSqlDriverPlugin::keys () const [pure virtual]Returns the list of drivers (keys) this plugin supports. These keys are usually the class names of the custom drivers that are implemented in the plugin. See also create(). |
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