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100 lines
4.3 KiB
100 lines
4.3 KiB
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<title>TQSqlDriverPlugin Class</title>
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<font color="#004faf">Home</font></a>
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<td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>TQSqlDriverPlugin Class Reference</h1>
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<p>The TQSqlDriverPlugin class provides an abstract base for custom TQSqlDriver plugins.
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<a href="#details">More...</a>
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<p><tt>#include <<a href="tqsqldriverplugin-h.html">tqsqldriverplugin.h</a>></tt>
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<p><a href="tqsqldriverplugin-members.html">List of all member functions.</a>
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<h2>Public Members</h2>
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<ul>
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<li class=fn><a href="#TQSqlDriverPlugin"><b>TQSqlDriverPlugin</b></a> ()</li>
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<li class=fn><a href="#~TQSqlDriverPlugin"><b>~TQSqlDriverPlugin</b></a> ()</li>
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<li class=fn>virtual TQStringList <a href="#keys"><b>keys</b></a> () const = 0</li>
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<li class=fn>virtual TQSqlDriver * <a href="#create"><b>create</b></a> ( const TQString & key ) = 0</li>
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</ul>
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<hr><a name="details"></a><h2>Detailed Description</h2>
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The TQSqlDriverPlugin class provides an abstract base for custom <a href="tqsqldriver.html">TQSqlDriver</a> plugins.
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<p>
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<p> The SQL driver plugin is a simple plugin interface that makes it
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easy to create your own SQL driver plugins that can be loaded
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dynamically by TQt.
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<p> Writing a SQL plugin is achieved by subclassing this base class,
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reimplementing the pure virtual functions <a href="#keys">keys</a>() and <a href="#create">create</a>(), and
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exporting the class with the <tt>TQ_EXPORT_PLUGIN</tt> macro. See the SQL
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plugins that come with TQt for example implementations (in the
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<tt>plugins/src/sqldrivers</tt> subdirectory of the source
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distribution). Read the <a href="plugins-howto.html">plugins
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documentation</a> for more information on plugins.
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<p>See also <a href="plugins.html">Plugins</a>.
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<hr><h2>Member Function Documentation</h2>
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<h3 class=fn><a name="TQSqlDriverPlugin"></a>TQSqlDriverPlugin::TQSqlDriverPlugin ()
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</h3>
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Constructs a SQL driver plugin. This is invoked automatically by
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the <tt>TQ_EXPORT_PLUGIN</tt> macro.
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<h3 class=fn><a name="~TQSqlDriverPlugin"></a>TQSqlDriverPlugin::~TQSqlDriverPlugin ()
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</h3>
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Destroys the SQL driver plugin.
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<p> You never have to call this explicitly. TQt destroys a plugin
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automatically when it is no longer used.
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<h3 class=fn><a href="tqsqldriver.html">TQSqlDriver</a> * <a name="create"></a>TQSqlDriverPlugin::create ( const <a href="tqstring.html">TQString</a> & key )<tt> [pure virtual]</tt>
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</h3>
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<p> Creates and returns a <a href="tqsqldriver.html">TQSqlDriver</a> object for the driver key <em>key</em>.
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The driver key is usually the class name of the required driver.
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<p> <p>See also <a href="#keys">keys</a>().
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<h3 class=fn><a href="tqstringlist.html">TQStringList</a> <a name="keys"></a>TQSqlDriverPlugin::keys () const<tt> [pure virtual]</tt>
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</h3>
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<p> Returns the list of drivers (keys) this plugin supports.
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<p> These keys are usually the class names of the custom drivers that
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are implemented in the plugin.
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<p> <p>See also <a href="#create">create</a>().
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<hr><p>
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This file is part of the <a href="index.html">TQt toolkit</a>.
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Copyright © 1995-2007
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<a href="http://www.trolltech.com/">Trolltech</a>. All Rights Reserved.<p><address><hr><div align=center>
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<a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a>
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<td align=right><div align=right>TQt 3.3.8</div>
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