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<li class="level1"><a href="#public-functions">Public Functions</a></li>
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<h1 class="title">QDesignerMemberSheetExtension Class Reference</h1>
<!-- $$$QDesignerMemberSheetExtension-brief -->
<p>The QDesignerMemberSheetExtension class allows you to manipulate a widget's member functions which is displayed when configuring connections using Qt Designer's mode for editing signals and slots. <a href="#details">More...</a></p>
<!-- @@@QDesignerMemberSheetExtension -->
<pre class="cpp"> <span class="preprocessor">#include <QDesignerMemberSheetExtension></span></pre><ul>
<li><a href="qdesignermembersheetextension-members.html">List of all members, including inherited members</a></li>
</ul>
<a name="public-functions"></a>
<h2>Public Functions</h2>
<table class="alignedsummary">
<tr><td class="memItemLeft rightAlign topAlign"> virtual </td><td class="memItemRight bottomAlign"><b><a href="qdesignermembersheetextension.html#dtor.QDesignerMemberSheetExtension">~QDesignerMemberSheetExtension</a></b> ()</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual int </td><td class="memItemRight bottomAlign"><b><a href="qdesignermembersheetextension.html#count">count</a></b> () const = 0</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual QString </td><td class="memItemRight bottomAlign"><b><a href="qdesignermembersheetextension.html#declaredInClass">declaredInClass</a></b> ( int <i>index</i> ) const = 0</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual int </td><td class="memItemRight bottomAlign"><b><a href="qdesignermembersheetextension.html#indexOf">indexOf</a></b> ( const QString & <i>name</i> ) const = 0</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual bool </td><td class="memItemRight bottomAlign"><b><a href="qdesignermembersheetextension.html#inheritedFromWidget">inheritedFromWidget</a></b> ( int <i>index</i> ) const = 0</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual bool </td><td class="memItemRight bottomAlign"><b><a href="qdesignermembersheetextension.html#isSignal">isSignal</a></b> ( int <i>index</i> ) const = 0</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual bool </td><td class="memItemRight bottomAlign"><b><a href="qdesignermembersheetextension.html#isSlot">isSlot</a></b> ( int <i>index</i> ) const = 0</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual bool </td><td class="memItemRight bottomAlign"><b><a href="qdesignermembersheetextension.html#isVisible">isVisible</a></b> ( int <i>index</i> ) const = 0</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual QString </td><td class="memItemRight bottomAlign"><b><a href="qdesignermembersheetextension.html#memberGroup">memberGroup</a></b> ( int <i>index</i> ) const = 0</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual QString </td><td class="memItemRight bottomAlign"><b><a href="qdesignermembersheetextension.html#memberName">memberName</a></b> ( int <i>index</i> ) const = 0</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual QList<QByteArray> </td><td class="memItemRight bottomAlign"><b><a href="qdesignermembersheetextension.html#parameterNames">parameterNames</a></b> ( int <i>index</i> ) const = 0</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual QList<QByteArray> </td><td class="memItemRight bottomAlign"><b><a href="qdesignermembersheetextension.html#parameterTypes">parameterTypes</a></b> ( int <i>index</i> ) const = 0</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual void </td><td class="memItemRight bottomAlign"><b><a href="qdesignermembersheetextension.html#setMemberGroup">setMemberGroup</a></b> ( int <i>index</i>, const QString & <i>group</i> ) = 0</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual void </td><td class="memItemRight bottomAlign"><b><a href="qdesignermembersheetextension.html#setVisible">setVisible</a></b> ( int <i>index</i>, bool <i>visible</i> ) = 0</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual QString </td><td class="memItemRight bottomAlign"><b><a href="qdesignermembersheetextension.html#signature">signature</a></b> ( int <i>index</i> ) const = 0</td></tr>
</table>
<a name="details"></a>
<!-- $$$QDesignerMemberSheetExtension-description -->
<div class="descr">
<h2>Detailed Description</h2>
<p>The QDesignerMemberSheetExtension class allows you to manipulate a widget's member functions which is displayed when configuring connections using Qt Designer's mode for editing signals and slots.</p>
<p>QDesignerMemberSheetExtension is a collection of functions that is typically used to query a widget's member functions, and to manipulate the member functions' appearance in <i>Qt Designer</i>'s signals and slots editing mode. For example:</p>
<pre class="cpp"> <span class="type">QDesignerMemberSheetExtension</span> <span class="operator">*</span>memberSheet <span class="operator">=</span> <span class="number">0</span>;
<span class="type"><a href="qextensionmanager.html">QExtensionManager</a></span> manager <span class="operator">=</span> formEditor<span class="operator">-</span><span class="operator">></span>extensionManager();
memberSheet <span class="operator">=</span> qt_extension<span class="operator"><</span><span class="type">QDesignerMemberSheetExtension</span><span class="operator">*</span><span class="operator">></span>(manager<span class="operator">,</span> widget);
<span class="type">int</span> index <span class="operator">=</span> memberSheet<span class="operator">-</span><span class="operator">></span><a href="qdesignermembersheetextension.html#indexOf">indexOf</a>(setEchoMode);
memberSheet<span class="operator">-</span><span class="operator">></span><a href="qdesignermembersheetextension.html#setVisible">setVisible</a>(index<span class="operator">,</span> <span class="keyword">false</span>);
<span class="keyword">delete</span> memberSheet;</pre>
<p>When implementing a custom widget plugin, a pointer to <i>Qt Designer</i>'s current <a href="qdesignerformeditorinterface.html">QDesignerFormEditorInterface</a> object (<tt>formEditor</tt> in the example above) is provided by the <a href="qdesignercustomwidgetinterface.html#initialize">QDesignerCustomWidgetInterface::initialize</a>() function's parameter.</p>
<p>The member sheet (and any other extension), can be retrieved by querying <i>Qt Designer</i>'s extension manager using the <a href="qextensionmanager.html#qt_extension">qt_extension</a>() function. When you want to release the extension, you only need to delete the pointer.</p>
<p>All widgets have a default member sheet used in <i>Qt Designer</i>'s signals and slots editing mode with the widget's member functions. But QDesignerMemberSheetExtension also provides an interface for creating custom member sheet extensions.</p>
<p><b>Warning:</b> <i>Qt Designer</i> uses the QDesignerMemberSheetExtension to facilitate the signal and slot editing mode. Whenever a connection between two widgets is requested, <i>Qt Designer</i> will query for the widgets' member sheet extensions. If a widget has an implemented member sheet extension, this extension will override the default member sheet.</p>
<p>To create a member sheet extension, your extension class must inherit from both <a href="qobject.html">QObject</a> and QDesignerMemberSheetExtension. Then, since we are implementing an interface, we must ensure that it's made known to the meta object system using the <a href="qobject.html#Q_INTERFACES">Q_INTERFACES</a>() macro:</p>
<pre class="cpp"> <span class="keyword">class</span> MyMemberSheetExtension : <span class="keyword">public</span> <span class="type"><a href="qobject.html">QObject</a></span><span class="operator">,</span>
<span class="keyword">public</span> <span class="type">QDesignerMemberSheetExtension</span>
{
Q_OBJECT
Q_INTERFACES(<span class="type">QDesignerMemberSheetExtension</span>)
<span class="keyword">public</span>:
<span class="operator">.</span><span class="operator">.</span><span class="operator">.</span>
}</pre>
<p>This enables <i>Qt Designer</i> to use <a href="qobject.html#qobject_cast">qobject_cast</a>() to query for supported interfaces using nothing but a <a href="qobject.html">QObject</a> pointer.</p>
<p>In <i>Qt Designer</i> the extensions are not created until they are required. For that reason, when implementing a member sheet extension, you must also create a <a href="qextensionfactory.html">QExtensionFactory</a>, i.e a class that is able to make an instance of your extension, and register it using <i>Qt Designer</i>'s <a href="qextensionmanager.html">extension manager</a>.</p>
<p>When a widget's member sheet extension is required, <i>Qt Designer</i>'s <a href="qextensionmanager.html">extension manager</a> will run through all its registered factories calling <a href="qextensionfactory.html#createExtension">QExtensionFactory::createExtension</a>() for each until the first one that is able to create a member sheet extension for that widget, is found. This factory will then make an instance of the extension. If no such factory is found, <i>Qt Designer</i> will use the default member sheet.</p>
<p>There are four available types of extensions in <i>Qt Designer</i>: <a href="qdesignercontainerextension.html">QDesignerContainerExtension</a>, QDesignerMemberSheetExtension, <a href="qdesignerpropertysheetextension.html">QDesignerPropertySheetExtension</a> and <a href="qdesignertaskmenuextension.html">QDesignerTaskMenuExtension</a>. <i>Qt Designer</i>'s behavior is the same whether the requested extension is associated with a multi page container, a member sheet, a property sheet or a task menu.</p>
<p>The <a href="qextensionfactory.html">QExtensionFactory</a> class provides a standard extension factory, and can also be used as an interface for custom extension factories. You can either create a new <a href="qextensionfactory.html">QExtensionFactory</a> and reimplement the <a href="qextensionfactory.html#createExtension">QExtensionFactory::createExtension</a>() function. For example:</p>
<pre class="cpp"> <span class="type"><a href="qobject.html">QObject</a></span> <span class="operator">*</span>ANewExtensionFactory<span class="operator">::</span>createExtension(<span class="type"><a href="qobject.html">QObject</a></span> <span class="operator">*</span>object<span class="operator">,</span>
<span class="keyword">const</span> <span class="type"><a href="qstring.html">QString</a></span> <span class="operator">&</span>iid<span class="operator">,</span> <span class="type"><a href="qobject.html">QObject</a></span> <span class="operator">*</span>parent) <span class="keyword">const</span>
{
<span class="keyword">if</span> (iid <span class="operator">!</span><span class="operator">=</span> Q_TYPEID(<span class="type">QDesignerMemberSheetExtension</span>))
<span class="keyword">return</span> <span class="number">0</span>;
<span class="keyword">if</span> (MyCustomWidget <span class="operator">*</span>widget <span class="operator">=</span> qobject_cast<span class="operator"><</span>MyCustomWidget<span class="operator">*</span><span class="operator">></span>
(object))
<span class="keyword">return</span> <span class="keyword">new</span> MyMemberSheetExtension(widget<span class="operator">,</span> parent);
<span class="keyword">return</span> <span class="number">0</span>;
}</pre>
<p>Or you can use an existing factory, expanding the <a href="qextensionfactory.html#createExtension">QExtensionFactory::createExtension</a>() function to make the factory able to create a member sheet extension as well. For example:</p>
<pre class="cpp"> <span class="type"><a href="qobject.html">QObject</a></span> <span class="operator">*</span>AGeneralExtensionFactory<span class="operator">::</span>createExtension(<span class="type"><a href="qobject.html">QObject</a></span> <span class="operator">*</span>object<span class="operator">,</span>
<span class="keyword">const</span> <span class="type"><a href="qstring.html">QString</a></span> <span class="operator">&</span>iid<span class="operator">,</span> <span class="type"><a href="qobject.html">QObject</a></span> <span class="operator">*</span>parent) <span class="keyword">const</span>
{
MyCustomWidget <span class="operator">*</span>widget <span class="operator">=</span> qobject_cast<span class="operator"><</span>MyCustomWidget<span class="operator">*</span><span class="operator">></span>(object);
<span class="keyword">if</span> (widget <span class="operator">&</span><span class="operator">&</span> (iid <span class="operator">=</span><span class="operator">=</span> Q_TYPEID(<span class="type"><a href="qdesignertaskmenuextension.html">QDesignerTaskMenuExtension</a></span>))) {
<span class="keyword">return</span> <span class="keyword">new</span> MyTaskMenuExtension(widget<span class="operator">,</span> parent);
} <span class="keyword">else</span> <span class="keyword">if</span> (widget <span class="operator">&</span><span class="operator">&</span> (iid <span class="operator">=</span><span class="operator">=</span> Q_TYPEID(<span class="type">QDesignerMemberSheetExtension</span>))) {
<span class="keyword">return</span> <span class="keyword">new</span> MyMemberSheetExtension(widget<span class="operator">,</span> parent);
} <span class="keyword">else</span> {
<span class="keyword">return</span> <span class="number">0</span>;
}
}</pre>
<p>For a complete example using an extension class, see <a href="designer-taskmenuextension.html">Task Menu Extension example</a>. The example shows how to create a custom widget plugin for Qt Designer, and how to to use the <a href="qdesignertaskmenuextension.html">QDesignerTaskMenuExtension</a> class to add custom items to <i>Qt Designer</i>'s task menu.</p>
</div>
<p><b>See also </b><a href="qextensionfactory.html">QExtensionFactory</a>, <a href="qextensionmanager.html">QExtensionManager</a>, and <a href="designer-creating-custom-widgets-extensions.html">Creating Custom Widget Extensions</a>.</p>
<!-- @@@QDesignerMemberSheetExtension -->
<div class="func">
<h2>Member Function Documentation</h2>
<!-- $$$~QDesignerMemberSheetExtension[overload1]$$$~QDesignerMemberSheetExtension -->
<h3 class="fn"><a name="dtor.QDesignerMemberSheetExtension"></a>QDesignerMemberSheetExtension::<span class="name">~QDesignerMemberSheetExtension</span> ()<tt> [virtual]</tt></h3>
<p>Destroys the member sheet extension.</p>
<!-- @@@~QDesignerMemberSheetExtension -->
<!-- $$$count[overload1]$$$count -->
<h3 class="fn"><a name="count"></a><span class="type">int</span> QDesignerMemberSheetExtension::<span class="name">count</span> () const<tt> [pure virtual]</tt></h3>
<p>Returns the extension's number of member functions.</p>
<!-- @@@count -->
<!-- $$$declaredInClass[overload1]$$$declaredInClassint -->
<h3 class="fn"><a name="declaredInClass"></a><span class="type"><a href="qstring.html">QString</a></span> QDesignerMemberSheetExtension::<span class="name">declaredInClass</span> ( <span class="type">int</span> <i>index</i> ) const<tt> [pure virtual]</tt></h3>
<p>Returns the name of the class in which the member function with the given <i>index</i> is declared.</p>
<p><b>See also </b><a href="qdesignermembersheetextension.html#indexOf">indexOf</a>().</p>
<!-- @@@declaredInClass -->
<!-- $$$indexOf[overload1]$$$indexOfconstQString& -->
<h3 class="fn"><a name="indexOf"></a><span class="type">int</span> QDesignerMemberSheetExtension::<span class="name">indexOf</span> ( const <span class="type"><a href="qstring.html">QString</a></span> & <i>name</i> ) const<tt> [pure virtual]</tt></h3>
<p>Returns the index of the member function specified by the given <i>name</i>.</p>
<p><b>See also </b><a href="qdesignermembersheetextension.html#memberName">memberName</a>().</p>
<!-- @@@indexOf -->
<!-- $$$inheritedFromWidget[overload1]$$$inheritedFromWidgetint -->
<h3 class="fn"><a name="inheritedFromWidget"></a><span class="type">bool</span> QDesignerMemberSheetExtension::<span class="name">inheritedFromWidget</span> ( <span class="type">int</span> <i>index</i> ) const<tt> [pure virtual]</tt></h3>
<p>Returns true if the member function with the given <i>index</i> is inherited from <a href="qwidget.html">QWidget</a>, otherwise false.</p>
<p><b>See also </b><a href="qdesignermembersheetextension.html#indexOf">indexOf</a>().</p>
<!-- @@@inheritedFromWidget -->
<!-- $$$isSignal[overload1]$$$isSignalint -->
<h3 class="fn"><a name="isSignal"></a><span class="type">bool</span> QDesignerMemberSheetExtension::<span class="name">isSignal</span> ( <span class="type">int</span> <i>index</i> ) const<tt> [pure virtual]</tt></h3>
<p>Returns true if the member function with the given <i>index</i> is a signal, otherwise false.</p>
<p><b>See also </b><a href="qdesignermembersheetextension.html#indexOf">indexOf</a>().</p>
<!-- @@@isSignal -->
<!-- $$$isSlot[overload1]$$$isSlotint -->
<h3 class="fn"><a name="isSlot"></a><span class="type">bool</span> QDesignerMemberSheetExtension::<span class="name">isSlot</span> ( <span class="type">int</span> <i>index</i> ) const<tt> [pure virtual]</tt></h3>
<p>Returns true if the member function with the given <i>index</i> is a slot, otherwise false.</p>
<p><b>See also </b><a href="qdesignermembersheetextension.html#indexOf">indexOf</a>().</p>
<!-- @@@isSlot -->
<!-- $$$isVisible[overload1]$$$isVisibleint -->
<h3 class="fn"><a name="isVisible"></a><span class="type">bool</span> QDesignerMemberSheetExtension::<span class="name">isVisible</span> ( <span class="type">int</span> <i>index</i> ) const<tt> [pure virtual]</tt></h3>
<p>Returns true if the member function with the given <i>index</i> is visible in <i>Qt Designer</i>'s signal and slot editor, otherwise false.</p>
<p><b>See also </b><a href="qdesignermembersheetextension.html#indexOf">indexOf</a>() and <a href="qdesignermembersheetextension.html#setVisible">setVisible</a>().</p>
<!-- @@@isVisible -->
<!-- $$$memberGroup[overload1]$$$memberGroupint -->
<h3 class="fn"><a name="memberGroup"></a><span class="type"><a href="qstring.html">QString</a></span> QDesignerMemberSheetExtension::<span class="name">memberGroup</span> ( <span class="type">int</span> <i>index</i> ) const<tt> [pure virtual]</tt></h3>
<p>Returns the name of the member group specified for the function with the given <i>index</i>.</p>
<p><b>See also </b><a href="qdesignermembersheetextension.html#indexOf">indexOf</a>() and <a href="qdesignermembersheetextension.html#setMemberGroup">setMemberGroup</a>().</p>
<!-- @@@memberGroup -->
<!-- $$$memberName[overload1]$$$memberNameint -->
<h3 class="fn"><a name="memberName"></a><span class="type"><a href="qstring.html">QString</a></span> QDesignerMemberSheetExtension::<span class="name">memberName</span> ( <span class="type">int</span> <i>index</i> ) const<tt> [pure virtual]</tt></h3>
<p>Returns the name of the member function with the given <i>index</i>.</p>
<p><b>See also </b><a href="qdesignermembersheetextension.html#indexOf">indexOf</a>().</p>
<!-- @@@memberName -->
<!-- $$$parameterNames[overload1]$$$parameterNamesint -->
<h3 class="fn"><a name="parameterNames"></a><span class="type"><a href="qlist.html">QList</a></span><<span class="type"><a href="qbytearray.html">QByteArray</a></span>> QDesignerMemberSheetExtension::<span class="name">parameterNames</span> ( <span class="type">int</span> <i>index</i> ) const<tt> [pure virtual]</tt></h3>
<p>Returns the parameter names of the member function with the given <i>index</i>, as a <a href="qbytearray.html">QByteArray</a> list.</p>
<p><b>See also </b><a href="qdesignermembersheetextension.html#indexOf">indexOf</a>() and <a href="qdesignermembersheetextension.html#parameterTypes">parameterTypes</a>().</p>
<!-- @@@parameterNames -->
<!-- $$$parameterTypes[overload1]$$$parameterTypesint -->
<h3 class="fn"><a name="parameterTypes"></a><span class="type"><a href="qlist.html">QList</a></span><<span class="type"><a href="qbytearray.html">QByteArray</a></span>> QDesignerMemberSheetExtension::<span class="name">parameterTypes</span> ( <span class="type">int</span> <i>index</i> ) const<tt> [pure virtual]</tt></h3>
<p>Returns the parameter types of the member function with the given <i>index</i>, as a <a href="qbytearray.html">QByteArray</a> list.</p>
<p><b>See also </b><a href="qdesignermembersheetextension.html#indexOf">indexOf</a>() and <a href="qdesignermembersheetextension.html#parameterNames">parameterNames</a>().</p>
<!-- @@@parameterTypes -->
<!-- $$$setMemberGroup[overload1]$$$setMemberGroupintconstQString& -->
<h3 class="fn"><a name="setMemberGroup"></a><span class="type">void</span> QDesignerMemberSheetExtension::<span class="name">setMemberGroup</span> ( <span class="type">int</span> <i>index</i>, const <span class="type"><a href="qstring.html">QString</a></span> & <i>group</i> )<tt> [pure virtual]</tt></h3>
<p>Sets the member group of the member function with the given <i>index</i>, to <i>group</i>.</p>
<p><b>See also </b><a href="qdesignermembersheetextension.html#indexOf">indexOf</a>() and <a href="qdesignermembersheetextension.html#memberGroup">memberGroup</a>().</p>
<!-- @@@setMemberGroup -->
<!-- $$$setVisible[overload1]$$$setVisibleintbool -->
<h3 class="fn"><a name="setVisible"></a><span class="type">void</span> QDesignerMemberSheetExtension::<span class="name">setVisible</span> ( <span class="type">int</span> <i>index</i>, <span class="type">bool</span> <i>visible</i> )<tt> [pure virtual]</tt></h3>
<p>If <i>visible</i> is true, the member function with the given <i>index</i> is visible in <i>Qt Designer</i>'s signals and slots editing mode; otherwise the member function is hidden.</p>
<p><b>See also </b><a href="qdesignermembersheetextension.html#indexOf">indexOf</a>() and <a href="qdesignermembersheetextension.html#isVisible">isVisible</a>().</p>
<!-- @@@setVisible -->
<!-- $$$signature[overload1]$$$signatureint -->
<h3 class="fn"><a name="signature"></a><span class="type"><a href="qstring.html">QString</a></span> QDesignerMemberSheetExtension::<span class="name">signature</span> ( <span class="type">int</span> <i>index</i> ) const<tt> [pure virtual]</tt></h3>
<p>Returns the signature of the member function with the given <i>index</i>.</p>
<p><b>See also </b><a href="qdesignermembersheetextension.html#indexOf">indexOf</a>().</p>
<!-- @@@signature -->
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