<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <!-- /home/espenr/tmp/qt-3.3.8-espenr-2499/qt-x11-free-3.3.8/src/sql/qsqldriverplugin.cpp:45 --> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> <title>TQSqlDriverPlugin Class</title> <style type="text/css"><!-- fn { margin-left: 1cm; text-indent: -1cm; } a:link { color: #004faf; text-decoration: none } a:visited { color: #672967; text-decoration: none } body { background: #ffffff; color: black; } --></style> </head> <body> <table border="0" cellpadding="0" cellspacing="0" width="100%"> <tr bgcolor="#E5E5E5"> <td valign=center> <a href="index.html"> <font color="#004faf">Home</font></a> | <a href="classes.html"> <font color="#004faf">All Classes</font></a> | <a href="mainclasses.html"> <font color="#004faf">Main Classes</font></a> | <a href="annotated.html"> <font color="#004faf">Annotated</font></a> | <a href="groups.html"> <font color="#004faf">Grouped Classes</font></a> | <a href="functions.html"> <font color="#004faf">Functions</font></a> </td> <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> <p>The TQSqlDriverPlugin class provides an abstract base for custom TQSqlDriver plugins. <a href="#details">More...</a> <p><tt>#include <<a href="qsqldriverplugin-h.html">ntqsqldriverplugin.h</a>></tt> <p><a href="qsqldriverplugin-members.html">List of all member functions.</a> <h2>Public Members</h2> <ul> <li class=fn><a href="#TQSqlDriverPlugin"><b>TQSqlDriverPlugin</b></a> ()</li> <li class=fn><a href="#~TQSqlDriverPlugin"><b>~TQSqlDriverPlugin</b></a> ()</li> <li class=fn>virtual TQStringList <a href="#keys"><b>keys</b></a> () const = 0</li> <li class=fn>virtual TQSqlDriver * <a href="#create"><b>create</b></a> ( const TQString & key ) = 0</li> </ul> <hr><a name="details"></a><h2>Detailed Description</h2> The TQSqlDriverPlugin class provides an abstract base for custom <a href="ntqsqldriver.html">TQSqlDriver</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 TQt. <p> Writing a SQL plugin is achieved by subclassing this base class, reimplementing the pure virtual functions <a href="#keys">keys</a>() and <a href="#create">create</a>(), and exporting the class with the <tt>Q_EXPORT_PLUGIN</tt> macro. See the SQL plugins that come with TQt for example implementations (in the <tt>plugins/src/sqldrivers</tt> subdirectory of the source distribution). Read the <a href="plugins-howto.html">plugins documentation</a> for more information on plugins. <p>See also <a href="plugins.html">Plugins</a>. <hr><h2>Member Function Documentation</h2> <h3 class=fn><a name="TQSqlDriverPlugin"></a>TQSqlDriverPlugin::TQSqlDriverPlugin () </h3> Constructs a SQL driver plugin. This is invoked automatically by the <tt>Q_EXPORT_PLUGIN</tt> macro. <h3 class=fn><a name="~TQSqlDriverPlugin"></a>TQSqlDriverPlugin::~TQSqlDriverPlugin () </h3> Destroys the SQL driver plugin. <p> You never have to call this explicitly. TQt destroys a plugin automatically when it is no longer used. <h3 class=fn><a href="ntqsqldriver.html">TQSqlDriver</a> * <a name="create"></a>TQSqlDriverPlugin::create ( const <a href="ntqstring.html">TQString</a> & key )<tt> [pure virtual]</tt> </h3> <p> Creates and returns a <a href="ntqsqldriver.html">TQSqlDriver</a> object for the driver key <em>key</em>. The driver key is usually the class name of the required driver. <p> <p>See also <a href="#keys">keys</a>(). <h3 class=fn><a href="ntqstringlist.html">TQStringList</a> <a name="keys"></a>TQSqlDriverPlugin::keys () const<tt> [pure virtual]</tt> </h3> <p> Returns the list of drivers (keys) this plugin supports. <p> These keys are usually the class names of the custom drivers that are implemented in the plugin. <p> <p>See also <a href="#create">create</a>(). <!-- eof --> <hr><p> This file is part of the <a href="index.html">TQt toolkit</a>. Copyright © 1995-2007 <a href="http://www.trolltech.com/">Trolltech</a>. All Rights Reserved.<p><address><hr><div align=center> <table width=100% cellspacing=0 border=0><tr> <td>Copyright © 2007 <a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a> <td align=right><div align=right>TQt 3.3.8</div> </table></div></address></body> </html>