TQSqlDriverPlugin Class Reference

The TQSqlDriverPlugin class provides an abstract base for custom TQSqlDriver plugins. More...

#include <ntqsqldriverplugin.h>

List of all member functions.

Public Members

TQSqlDriverPlugin ()
~TQSqlDriverPlugin ()
virtual TQStringList keys () const = 0
virtual TQSqlDriver * create ( const TQString & key ) = 0

Detailed Description

The TQSqlDriverPlugin class provides an abstract base for custom TQSqlDriver 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 TQt.

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 TQ_EXPORT_PLUGIN macro. See the SQL plugins that come with TQt for example implementations (in the plugins/src/sqldrivers subdirectory of the source distribution). Read the plugins documentation for more information on plugins.

Member Function Documentation

TQSqlDriverPlugin::TQSqlDriverPlugin ()

Constructs a SQL driver plugin. This is invoked automatically by the TQ_EXPORT_PLUGIN macro.

TQSqlDriverPlugin::~TQSqlDriverPlugin ()

Destroys the SQL driver plugin.

You never have to call this explicitly. TQt destroys a plugin automatically when it is no longer used.

TQSqlDriver * TQSqlDriverPlugin::create ( const TQString & key ) `[pure virtual]`

Creates and returns a TQSqlDriver object for the driver key key. The driver key is usually the class name of the required driver.

TQStringList TQSqlDriverPlugin::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.