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<title>Qt 4.8: QSqlDriverPlugin Class Reference</title>
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<a href="index.html" class="qtref"><span>Qt Reference Documentation</span></a>
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<h3><a name="toc">Contents</a></h3>
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<li class="level1"><a href="#public-functions">Public Functions</a></li>
<li class="level1"><a href="#details">Detailed Description</a></li>
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<h1 class="title">QSqlDriverPlugin Class Reference</h1>
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<p>The QSqlDriverPlugin class provides an abstract base for custom <a href="qsqldriver.html">QSqlDriver</a> plugins. <a href="#details">More...</a></p>
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<pre class="cpp"> <span class="preprocessor">#include <QSqlDriverPlugin></span></pre><p><b>Inherits: </b><a href="qobject.html">QObject</a>.</p>
<ul>
<li><a href="qsqldriverplugin-members.html">List of all members, including inherited members</a></li>
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<a name="public-functions"></a>
<h2>Public Functions</h2>
<table class="alignedsummary">
<tr><td class="memItemLeft rightAlign topAlign"> </td><td class="memItemRight bottomAlign"><b><a href="qsqldriverplugin.html#QSqlDriverPlugin">QSqlDriverPlugin</a></b> ( QObject * <i>parent</i> = 0 )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> </td><td class="memItemRight bottomAlign"><b><a href="qsqldriverplugin.html#dtor.QSqlDriverPlugin">~QSqlDriverPlugin</a></b> ()</td></tr>
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<h2>Reimplemented Public Functions</h2>
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<tr><td class="memItemLeft rightAlign topAlign"> virtual QSqlDriver * </td><td class="memItemRight bottomAlign"><b><a href="qsqldriverplugin.html#create">create</a></b> ( const QString & <i>key</i> ) = 0</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual QStringList </td><td class="memItemRight bottomAlign"><b><a href="qsqldriverplugin.html#keys">keys</a></b> () const = 0</td></tr>
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<li class="fn">29 public functions inherited from <a href="qobject.html#public-functions">QObject</a></li>
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<h3>Additional Inherited Members</h3>
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<li class="fn">1 property inherited from <a href="qobject.html#properties">QObject</a></li>
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<li class="fn">7 static public members inherited from <a href="qobject.html#static-public-members">QObject</a></li>
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<h2>Detailed Description</h2>
<p>The QSqlDriverPlugin class provides an abstract base for custom <a href="qsqldriver.html">QSqlDriver</a> plugins.</p>
<p>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.</p>
<p>Writing a SQL plugin is achieved by subclassing this base class, reimplementing the pure virtual functions <a href="qsqldriverplugin.html#keys">keys</a>() and <a href="qsqldriverplugin.html#create">create</a>(), and exporting the class with the <a href="qtplugin.html#Q_EXPORT_PLUGIN2">Q_EXPORT_PLUGIN2</a>() macro. See the SQL plugins that come with Qt for example implementations (in the <tt>plugins/src/sqldrivers</tt> subdirectory of the source distribution).</p>
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<p><b>See also </b><a href="plugins-howto.html">How to Create Qt Plugins</a>.</p>
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<h2>Member Function Documentation</h2>
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<h3 class="fn"><a name="QSqlDriverPlugin"></a>QSqlDriverPlugin::<span class="name">QSqlDriverPlugin</span> ( <span class="type"><a href="qobject.html">QObject</a></span> * <i>parent</i> = 0 )</h3>
<p>Constructs a SQL driver plugin and sets the parent to <i>parent</i>. This is invoked automatically by the <a href="qtplugin.html#Q_EXPORT_PLUGIN2">Q_EXPORT_PLUGIN2</a>() macro.</p>
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<h3 class="fn"><a name="dtor.QSqlDriverPlugin"></a>QSqlDriverPlugin::<span class="name">~QSqlDriverPlugin</span> ()</h3>
<p>Destroys the SQL driver plugin.</p>
<p>You never have to call this explicitly. Qt destroys a plugin automatically when it is no longer used.</p>
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<h3 class="fn"><a name="create"></a><span class="type"><a href="qsqldriver.html">QSqlDriver</a></span> * QSqlDriverPlugin::<span class="name">create</span> ( const <span class="type"><a href="qstring.html">QString</a></span> & <i>key</i> )<tt> [pure virtual]</tt></h3>
<p>Creates and returns a <a href="qsqldriver.html">QSqlDriver</a> object for the driver called <i>key</i>. The driver key is usually the class name of the required driver. Keys are case sensitive.</p>
<p><b>See also </b><a href="qsqldriverplugin.html#keys">keys</a>().</p>
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<h3 class="fn"><a name="keys"></a><span class="type"><a href="qstringlist.html">QStringList</a></span> QSqlDriverPlugin::<span class="name">keys</span> () const<tt> [pure virtual]</tt></h3>
<p>Returns the list of drivers (keys) this plugin supports.</p>
<p>These keys are usually the class names of the custom drivers that are implemented in the plugin.</p>
<p><b>See also </b><a href="qsqldriverplugin.html#create">create</a>().</p>
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