QSqlDriverPlugin Class
The QSqlDriverPlugin class provides an abstract base for custom QSqlDriver plugins. More...
| Header: | #include <QSqlDriverPlugin> |
| Inherits: | QObject |
Public Functions
| QSqlDriverPlugin(QObject * parent = 0) | |
| ~QSqlDriverPlugin() |
Reimplemented Public Functions
- 29 public functions inherited from QObject
Additional Inherited Members
- 1 property inherited from QObject
- 1 public slot inherited from QObject
- 1 signal inherited from QObject
- 7 static public members inherited from QObject
- 8 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.
[pure virtual] QSqlDriver * QSqlDriverPlugin::create(const QString & key)
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().
[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 also create().
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