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QSqlDriverPlugin Class

The QSqlDriverPlugin class provides an abstract base for custom QSqlDriver plugins. More...

 #include <QSqlDriverPlugin>

Inherits: QObject.

List of all members, including inherited members

Public Functions

	QSqlDriverPlugin(QObject * parent = 0)
	~QSqlDriverPlugin()

Reimplemented Public Functions

virtual QSqlDriver *	create(const QString & key) = 0
virtual QStringList	keys() const = 0

31 public functions inherited from QObject

Additional Inherited Members

1 property inherited from QObject
1 public slot inherited from QObject
2 signal inherited from QObject
11 static public members inherited from QObject
9 protected functions inherited from QObject

Detailed Description

The 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.

Member Function Documentation

QSqlDriverPlugin::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().

The documentation provided herein is licensed under the terms of the GNU Free Documentation License version 1.3 as published by the Free Software Foundation.

Documentation sources may be obtained from www.qt-project.org.

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