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147 lines
8.1 KiB
147 lines
8.1 KiB
14 years ago
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
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<!-- /home/espenr/tmp/qt-3.3.8-espenr-2499/qt-x11-free-3.3.8/src/widgets/qwidgetplugin.cpp:48 -->
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
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<title>QWidgetPlugin Class</title>
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--></style>
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<tr bgcolor="#E5E5E5">
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<td valign=center>
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<a href="index.html">
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<font color="#004faf">Home</font></a>
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<font color="#004faf">All Classes</font></a>
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<font color="#004faf">Main Classes</font></a>
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<font color="#004faf">Functions</font></a>
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</td>
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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>QWidgetPlugin Class Reference</h1>
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<p>The QWidgetPlugin class provides an abstract base for custom QWidget plugins.
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<a href="#details">More...</a>
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<p><tt>#include <<a href="qwidgetplugin-h.html">qwidgetplugin.h</a>></tt>
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<p><a href="qwidgetplugin-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="#QWidgetPlugin"><b>QWidgetPlugin</b></a> ()</li>
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<li class=fn><a href="#~QWidgetPlugin"><b>~QWidgetPlugin</b></a> ()</li>
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<li class=fn>virtual QStringList <a href="#keys"><b>keys</b></a> () const = 0</li>
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<li class=fn>virtual QWidget * <a href="#create"><b>create</b></a> ( const QString & key, QWidget * parent = 0, const char * name = 0 ) = 0</li>
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<li class=fn>virtual QString <a href="#group"><b>group</b></a> ( const QString & key ) const</li>
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<li class=fn>virtual QIconSet <a href="#iconSet"><b>iconSet</b></a> ( const QString & key ) const</li>
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<li class=fn>virtual QString <a href="#includeFile"><b>includeFile</b></a> ( const QString & key ) const</li>
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<li class=fn>virtual QString <a href="#toolTip"><b>toolTip</b></a> ( const QString & key ) const</li>
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<li class=fn>virtual QString <a href="#whatsThis"><b>whatsThis</b></a> ( const QString & key ) const</li>
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<li class=fn>virtual bool <a href="#isContainer"><b>isContainer</b></a> ( const QString & key ) const</li>
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</ul>
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<hr><a name="details"></a><h2>Detailed Description</h2>
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The QWidgetPlugin class provides an abstract base for custom <a href="qwidget.html">QWidget</a> plugins.
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<p>
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<p> The widget plugin is a simple plugin interface that makes it easy
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to create custom widgets that can be included in forms using <a href="designer-manual.html">Qt Designer</a> and used by applications.
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<p> Writing a widget plugin is achieved by subclassing this base
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class, reimplementing the pure virtual functions <a href="#keys">keys</a>(), <a href="#create">create</a>(),
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<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
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<a href="#isContainer">isContainer</a>(), and exporting the class with the <tt>Q_EXPORT_PLUGIN</tt>
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macro.
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<p> See the <a href="designer-manual.html">Qt Designer manual's</a>,
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'Creating Custom Widgets' section in the 'Creating Custom Widgets'
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chapter, for a complete example of a QWidgetPlugin.
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<p> See also the <a href="plugins-howto.html">Plugins
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documentation</a> and the <a href="qwidgetfactory.html">QWidgetFactory</a> class that is
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supplied with <a href="designer-manual.html">Qt Designer</a>.
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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="QWidgetPlugin"></a>QWidgetPlugin::QWidgetPlugin ()
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</h3>
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Constructs a widget plugin. This is invoked automatically by the
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<tt>Q_EXPORT_PLUGIN</tt> macro.
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<h3 class=fn><a name="~QWidgetPlugin"></a>QWidgetPlugin::~QWidgetPlugin ()
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</h3>
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Destroys the widget plugin.
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<p> You never have to call this explicitly. Qt destroys a plugin
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automatically when it is no longer used.
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<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>
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</h3>
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<p> Creates and returns a <a href="qwidget.html">QWidget</a> object for the widget key <em>key</em>.
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The widget key is the class name of the required widget. The <em>name</em> and <em>parent</em> arguments are passed to the custom widget's
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constructor.
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<p> <p>See also <a href="#keys">keys</a>().
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<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>
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</h3>
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Returns the group (toolbar name) that the custom widget of class
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<em>key</em> should be part of when <em>Qt Designer</em> loads it.
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<p> The default implementation returns <a href="qstring.html#QString-null">QString::null</a>.
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<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>
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</h3>
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Returns the iconset that <em>Qt Designer</em> should use to represent
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the custom widget of class <em>key</em> in the toolbar.
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<p> The default implementation returns an null iconset.
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<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>
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</h3>
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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> in
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generated code.
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<p> The default implementation returns <a href="qstring.html#QString-null">QString::null</a>.
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<h3 class=fn>bool <a name="isContainer"></a>QWidgetPlugin::isContainer ( const <a href="qstring.html">QString</a> & key ) const<tt> [virtual]</tt>
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</h3>
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Returns TRUE if the custom widget of class <em>key</em> can contain
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other widgets, e.g. like <a href="qframe.html">QFrame</a>; otherwise returns FALSE.
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<p> The default implementation returns FALSE.
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<h3 class=fn><a href="qstringlist.html">QStringList</a> <a name="keys"></a>QWidgetPlugin::keys () const<tt> [pure virtual]</tt>
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</h3>
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<p> Returns the list of widget keys this plugin supports.
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<p> These keys must be the class names of the custom widgets that are
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implemented in the plugin.
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<p> <p>See also <a href="#create">create</a>().
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<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>
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</h3>
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Returns the text of the tooltip that <em>Qt Designer</em> should use
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for the custom widget of class <em>key</em>'s toolbar button.
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<p> The default implementation returns <a href="qstring.html#QString-null">QString::null</a>.
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<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>
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</h3>
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Returns the text of the whatsThis text that <em>Qt Designer</em> should
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use when the user requests whatsThis help for the custom widget of
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class <em>key</em>.
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<p> The default implementation returns <a href="qstring.html#QString-null">QString::null</a>.
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<!-- eof -->
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<hr><p>
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This file is part of the <a href="index.html">Qt 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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<table width=100% cellspacing=0 border=0><tr>
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<td>Copyright © 2007
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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>Qt 3.3.8</div>
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</table></div></address></body>
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</html>
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