Contents

• Public Functions
• Reimplemented Public Functions
• Detailed Description

Detailed Description

TheQSqlDriverPlugin class provides an abstract base for customQSqlDriver 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 functionskeys() andcreate(), and exporting the class with theQ_EXPORT_PLUGIN2() macro. See the SQL plugins that come with Qt for example implementations (in theplugins/src/sqldrivers subdirectory of the source distribution).

Member Function Documentation

QSqlDriverPlugin::QSqlDriverPlugin(QObject * parent = 0)

Constructs a SQL driver plugin and sets the parent toparent. This is invoked automatically by theQ_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.

[pure virtual]QSqlDriver * QSqlDriverPlugin::create(constQString & key)

Creates and returns aQSqlDriver object for the driver calledkey. The driver key is usually the class name of the required driver. Keys are case sensitive.

See alsokeys().

[pure virtual]QStringList QSqlDriverPlugin::keys() const

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 alsocreate().