qsqldriverplugin.html
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><!-- /home/reggie/tmp/qt-3.0-reggie-5401/qt-x11-commercial-3.0.5/src/sql/qsqldriverplugin.cpp:45 --><html><head><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><title>QSqlDriverPlugin Class</title><style type="text/css"><!--h3.fn,span.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>QSqlDriverPlugin Class Reference</h1><p>The QSqlDriverPlugin class provides an abstract base for custom QSqlDriver plugins.<a href="#details">More...</a><p><tt>#include <<a href="qsqldriverplugin-h.html">qsqldriverplugin.h</a>></tt><p><a href="qsqldriverplugin-members.html">List of all member functions.</a><h2>Public Members</h2><ul><li><div class=fn><a href="#QSqlDriverPlugin"><b>QSqlDriverPlugin</b></a> ()</div></li><li><div class=fn><a href="#~QSqlDriverPlugin"><b>~QSqlDriverPlugin</b></a> ()</div></li><li><div class=fn>virtual QStringList <a href="#keys"><b>keys</b></a> () const = 0</div></li><li><div class=fn>virtual QSqlDriver * <a href="#create"><b>create</b></a> ( const QString & key ) = 0</div></li></ul><hr><a name="details"></a><h2>Detailed Description</h2> The QSqlDriverPlugin class provides an abstract base for custom <a href="qsqldriver.html">QSqlDriver</a> plugins.<p> The SQL driver plugin is a simple plugin interface that makes it easyto create your own SQL driver plugins that can be loaded dynamicallyby Qt.<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>(), andexporting the class with the Q_EXPORT_PLUGIN macro. Seethe SQL plugins that come with Qt for example implementations (inthe <tt>plugins/src/sqldrivers</tt> subdirectory of the source distribution).Read the <a href="plugins-howto.html">plugins documentation</a> formore information on plugins.<p>See also <a href="plugins.html">Plugins</a>.<hr><h2>Member Function Documentation</h2><h3 class=fn><a name="QSqlDriverPlugin"></a>QSqlDriverPlugin::QSqlDriverPlugin ()</h3>Constructs a SQL driver plugin. This is invoked automatically bythe Q_EXPORT_PLUGIN macro.<h3 class=fn><a name="~QSqlDriverPlugin"></a>QSqlDriverPlugin::~QSqlDriverPlugin ()</h3>Destroys the SQL driver plugin.<p> You never have to call this explicitly. Qt destroys a pluginautomatically when it is no longer used.<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></h3> <p> Creates and returns a <a href="qsqldriver.html">QSqlDriver</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="qstringlist.html">QStringList</a> <a name="keys"></a>QSqlDriverPlugin::keys () const<tt> [pure virtual]</tt></h3> <p> Returns the list of driver keys this plugin supports.<p> These keys are usually the class names of the custom drivers that areimplemented 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">Qt toolkit</a>.Copyright © 1995-2002<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 © 2002 <a href="http://www.trolltech.com">Trolltech</a><td><a href="http://www.trolltech.com/trademarks.html">Trademarks</a><td align=right><div align=right>Qt version 3.0.5</div></table></div></address></body></html>⌨️ 快捷键说明
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