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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/widgets/qwidgetplugin.cpp:45 --><html><head><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><title>QWidgetPlugin 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>QWidgetPlugin Class Reference</h1><p>The QWidgetPlugin class provides an abstract base for custom QWidget plugins.<a href="#details">More...</a><p><tt>#include <<a href="qwidgetplugin-h.html">qwidgetplugin.h</a>></tt><p><a href="qwidgetplugin-members.html">List of all member functions.</a><h2>Public Members</h2><ul><li><div class=fn><a href="#QWidgetPlugin"><b>QWidgetPlugin</b></a> ()</div></li><li><div class=fn><a href="#~QWidgetPlugin"><b>~QWidgetPlugin</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 QWidget * <a href="#create"><b>create</b></a> ( const QString & key, QWidget * parent = 0, const char * name = 0 ) = 0</div></li><li><div class=fn>virtual QString <a href="#group"><b>group</b></a> ( const QString & key ) const</div></li><li><div class=fn>virtual QIconSet <a href="#iconSet"><b>iconSet</b></a> ( const QString & key ) const</div></li><li><div class=fn>virtual QString <a href="#includeFile"><b>includeFile</b></a> ( const QString & key ) const</div></li><li><div class=fn>virtual QString <a href="#toolTip"><b>toolTip</b></a> ( const QString & key ) const</div></li><li><div class=fn>virtual QString <a href="#whatsThis"><b>whatsThis</b></a> ( const QString & key ) const</div></li><li><div class=fn>virtual bool <a href="#isContainer"><b>isContainer</b></a> ( const QString & key ) const</div></li></ul><hr><a name="details"></a><h2>Detailed Description</h2>The QWidgetPlugin class provides an abstract base for custom <a href="qwidget.html">QWidget</a> plugins.<p> <p> The widget plugin is a simple plugin interface that makes it easyto create custom widgets that can be included in forms using <a href="designer-manual.html">Qt Designer</a> and used by applications.<p> Writing a widget plugin is achieved by subclassing this baseclass, reimplementing the pure virtual functions <a href="#keys">keys</a>(), <a href="#create">create</a>(),<a href="#group">group</a>(), <a href="#iconSet">iconSet</a>(), <a href="#includeFile">includeFile</a>(), <a href="#toolTip">toolTip</a>(), <a href="#whatsThis">whatsThis</a>() and<a href="#isContainer">isContainer</a>(), and exporting the class with the Q_EXPORT_PLUGINmacro.<p> See the <a href="designer-manual.html">Qt Designer manual's</a>, 'Creating Custom Widgets' section inthe 'Creating Custom Widgets' chapter, for a complete example of aQWidgetPlugin.<p> See also the <a href="plugins-howto.html">Plugins documentation</a> and the <a href="qwidgetfactory.html">QWidgetFactory</a> class that issupplied with <a href="designer-manual.html">Qt Designer</a>.<p>See also <a href="plugins.html">Plugins</a>.<hr><h2>Member Function Documentation</h2><h3 class=fn><a name="QWidgetPlugin"></a>QWidgetPlugin::QWidgetPlugin ()</h3>Constructs a widget plugin. This is invoked automatically bythe Q_EXPORT_PLUGIN macro.<h3 class=fn><a name="~QWidgetPlugin"></a>QWidgetPlugin::~QWidgetPlugin ()</h3>Destroys the widget plugin.<p> You never have to call this explicitly. Qt destroys a pluginautomatically when it is no longer used.<p> <h3 class=fn><a href="qwidget.html">QWidget</a> * <a name="create"></a>QWidgetPlugin::create ( const <a href="qstring.html">QString</a> & key, <a href="qwidget.html">QWidget</a> * parent = 0, const char * name = 0 )<tt> [pure virtual]</tt></h3> <p> Creates and returns a <a href="qwidget.html">QWidget</a> object for the widget key <em>key</em>. Thewidget key is the class name of the required widget. The<em>name</em> and <em>parent</em> arguments are passed to the custom widget'sconstructor.<p> <p>See also <a href="#keys">keys</a>().<h3 class=fn><a href="qstring.html">QString</a> <a name="group"></a>QWidgetPlugin::group ( const <a href="qstring.html">QString</a> & key ) const<tt> [virtual]</tt></h3>Returns the group (toolbar name) that the custom widget of class <em>key</em> should be part of when <em>Qt Designer</em> loads it.<p> The default implementation returns a null string.<h3 class=fn><a href="qiconset.html">QIconSet</a> <a name="iconSet"></a>QWidgetPlugin::iconSet ( const <a href="qstring.html">QString</a> & key ) const<tt> [virtual]</tt></h3>Returns the iconset that <em>Qt Designer</em> should use to representthe custom widget of class <em>key</em> in the toolbar.<p> The default implementation returns an null iconset.<h3 class=fn><a href="qstring.html">QString</a> <a name="includeFile"></a>QWidgetPlugin::includeFile ( const <a href="qstring.html">QString</a> & key ) const<tt> [virtual]</tt></h3>Returns the name of the include file that <em>Qt Designer</em> and <tt>uic</tt> should use to include the custom widget of class <em>key</em> ingenerated code.<p> The default implementation returns a null string.<h3 class=fn>bool <a name="isContainer"></a>QWidgetPlugin::isContainer ( const <a href="qstring.html">QString</a> & key ) const<tt> [virtual]</tt></h3>Returns TRUE if the custom widget of class <em>key</em> can contain otherwidgets, e.g. like <a href="qframe.html">QFrame</a>; otherwise returns FALSE.<p> The default implementation returns FALSE.<h3 class=fn><a href="qstringlist.html">QStringList</a> <a name="keys"></a>QWidgetPlugin::keys () const<tt> [pure virtual]</tt></h3> <p> Returns the list of widget keys this plugin supports.<p> These keys must be the class names of the custom widgets that areimplemented in the plugin.<p> <p>See also <a href="#create">create</a>().<h3 class=fn><a href="qstring.html">QString</a> <a name="toolTip"></a>QWidgetPlugin::toolTip ( const <a href="qstring.html">QString</a> & key ) const<tt> [virtual]</tt></h3>Returns the text of the tooltip that <em>Qt Designer</em> should usefor the custom widget of class <em>key</em>'s toolbar button.<p> The default implementation returns a null string.<h3 class=fn><a href="qstring.html">QString</a> <a name="whatsThis"></a>QWidgetPlugin::whatsThis ( const <a href="qstring.html">QString</a> & key ) const<tt> [virtual]</tt></h3>Returns the text of the whatsThis text that <em>Qt Designer</em> shoulduse when the user requests whatsThis help for the custom widgetof class <em>key</em>.<p> The default implementation returns a null string.<!-- 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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