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| 31 | </td>
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| 32 | <td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>QSqlDriverPlugin Class Reference</h1>
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| 33 |
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| 34 | <p>The QSqlDriverPlugin class provides an abstract base for custom QSqlDriver plugins.
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| 35 | <a href="#details">More...</a>
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| 36 | <p><tt>#include <<a href="qsqldriverplugin-h.html">qsqldriverplugin.h</a>></tt>
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| 37 | <p><a href="qsqldriverplugin-members.html">List of all member functions.</a>
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| 38 | <h2>Public Members</h2>
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| 39 | <ul>
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| 40 | <li class=fn><a href="#QSqlDriverPlugin"><b>QSqlDriverPlugin</b></a> ()</li>
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| 41 | <li class=fn><a href="#~QSqlDriverPlugin"><b>~QSqlDriverPlugin</b></a> ()</li>
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| 42 | <li class=fn>virtual QStringList <a href="#keys"><b>keys</b></a> () const = 0</li>
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| 43 | <li class=fn>virtual QSqlDriver * <a href="#create"><b>create</b></a> ( const QString & key ) = 0</li>
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| 44 | </ul>
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| 45 | <hr><a name="details"></a><h2>Detailed Description</h2>
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| 46 |
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| 47 |
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| 48 | The QSqlDriverPlugin class provides an abstract base for custom <a href="qsqldriver.html">QSqlDriver</a> plugins.
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| 49 | <p>
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| 50 |
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| 51 | <p> The SQL driver plugin is a simple plugin interface that makes it
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| 52 | easy to create your own SQL driver plugins that can be loaded
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| 53 | dynamically by Qt.
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| 54 | <p> Writing a SQL plugin is achieved by subclassing this base class,
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| 55 | reimplementing the pure virtual functions <a href="#keys">keys</a>() and <a href="#create">create</a>(), and
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| 56 | exporting the class with the <tt>Q_EXPORT_PLUGIN</tt> macro. See the SQL
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| 57 | plugins that come with Qt for example implementations (in the
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| 58 | <tt>plugins/src/sqldrivers</tt> subdirectory of the source
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| 59 | distribution). Read the <a href="plugins-howto.html">plugins
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| 60 | documentation</a> for more information on plugins.
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| 61 | <p>See also <a href="plugins.html">Plugins</a>.
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| 62 |
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| 63 | <hr><h2>Member Function Documentation</h2>
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| 64 | <h3 class=fn><a name="QSqlDriverPlugin"></a>QSqlDriverPlugin::QSqlDriverPlugin ()
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| 65 | </h3>
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| 66 | Constructs a SQL driver plugin. This is invoked automatically by
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| 67 | the <tt>Q_EXPORT_PLUGIN</tt> macro.
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| 68 |
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| 69 | <h3 class=fn><a name="~QSqlDriverPlugin"></a>QSqlDriverPlugin::~QSqlDriverPlugin ()
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| 70 | </h3>
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| 71 | Destroys the SQL driver plugin.
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| 72 | <p> You never have to call this explicitly. Qt destroys a plugin
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| 73 | automatically when it is no longer used.
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| 74 |
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| 75 | <h3 class=fn><a href="qsqldriver.html">QSqlDriver</a> * <a name="create"></a>QSqlDriverPlugin::create ( const <a href="qstring.html">QString</a> & key )<tt> [pure virtual]</tt>
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| 76 | </h3>
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| 77 |
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| 78 | <p> Creates and returns a <a href="qsqldriver.html">QSqlDriver</a> object for the driver key <em>key</em>.
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| 79 | The driver key is usually the class name of the required driver.
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| 80 | <p> <p>See also <a href="#keys">keys</a>().
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| 81 |
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| 82 | <h3 class=fn><a href="qstringlist.html">QStringList</a> <a name="keys"></a>QSqlDriverPlugin::keys () const<tt> [pure virtual]</tt>
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| 83 | </h3>
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| 84 |
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| 85 | <p> Returns the list of drivers (keys) this plugin supports.
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| 86 | <p> These keys are usually the class names of the custom drivers that
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| 87 | are implemented in the plugin.
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| 88 | <p> <p>See also <a href="#create">create</a>().
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| 89 |
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| 90 | <!-- eof -->
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| 93 | Copyright © 1995-2007
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| 98 | <td align=right><div align=right>Qt 3.3.8</div>
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