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<td >Qt 5.12</td><td ><a href="qt3d-index.html">Qt 3D</a></td><td ><a href="qt3d-cpp.html">C++ Classes</a></td><td >QNode</td></tr></table><table class="buildversion"><tr>
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<h3><a name="toc">Contents</a></h3>
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<li class="level1"><a href="#public-types">Public Types</a></li>
<li class="level1"><a href="#properties">Properties</a></li>
<li class="level1"><a href="#public-functions">Public Functions</a></li>
<li class="level1"><a href="#public-slots">Public Slots</a></li>
<li class="level1"><a href="#signals">Signals</a></li>
<li class="level1"><a href="#static-public-members">Static Public Members</a></li>
<li class="level1"><a href="#protected-functions">Protected Functions</a></li>
<li class="level1"><a href="#related-non-members">Related Non-Members</a></li>
<li class="level1"><a href="#details">Detailed Description</a></li>
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<h1 class="title">QNode Class</h1>
<span class="small-subtitle">(<a href="qt3dcore-qnode.html">Qt3DCore::QNode</a>)<br/></span>
<!-- $$$QNode-brief -->
<p><a href="qt3dcore-qnode.html">QNode</a> is the base class of all Qt3D node classes used to build a Qt3D scene. <a href="#details">More...</a></p>
<!-- @@@QNode -->
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<tr><td class="memItemLeft rightAlign topAlign"> Header:</td><td class="memItemRight bottomAlign">   <span class="preprocessor">#include &lt;QNode&gt;</span>
</td></tr><tr><td class="memItemLeft rightAlign topAlign"> qmake:</td><td class="memItemRight bottomAlign"> QT += 3dcore</td></tr><tr><td class="memItemLeft rightAlign topAlign"> Since:</td><td class="memItemRight bottomAlign">  Qt 5.5</td></tr><tr><td class="memItemLeft rightAlign topAlign"> Inherited By:</td><td class="memItemRight bottomAlign"> <p><a href="qt3danimation-qabstractanimationclip.html">Qt3DAnimation::QAbstractAnimationClip</a>, <a href="qt3danimation-qabstractclipblendnode.html">Qt3DAnimation::QAbstractClipBlendNode</a>, <a href="qt3danimation-qchannelmapper.html">Qt3DAnimation::QChannelMapper</a>, <a href="qt3dcore-qabstractskeleton.html">Qt3DCore::QAbstractSkeleton</a>, <a href="qt3dcore-qcomponent.html">Qt3DCore::QComponent</a>, <a href="qt3dcore-qentity.html">Qt3DCore::QEntity</a>, <a href="qt3dcore-qjoint.html">Qt3DCore::QJoint</a>, <a href="qt3dinput-qabstractactioninput.html">Qt3DInput::QAbstractActionInput</a>, <a href="qt3dinput-qabstractaxisinput.html">Qt3DInput::QAbstractAxisInput</a>, <a href="qt3dinput-qabstractphysicaldevice.html">Qt3DInput::QAbstractPhysicalDevice</a>, <a href="qt3dinput-qaction.html">Qt3DInput::QAction</a>, <a href="qt3dinput-qaxis.html">Qt3DInput::QAxis</a>, <a href="qt3dinput-qaxissetting.html">Qt3DInput::QAxisSetting</a>, <a href="qt3drender-qabstracttexture.html">Qt3DRender::QAbstractTexture</a>, <a href="qt3drender-qabstracttextureimage.html">Qt3DRender::QAbstractTextureImage</a>, <a href="qt3drender-qattribute.html">Qt3DRender::QAttribute</a>, <a href="qt3drender-qbuffer.html">Qt3DRender::QBuffer</a>, <a href="qt3drender-qeffect.html">Qt3DRender::QEffect</a>, <a href="qt3drender-qfilterkey.html">Qt3DRender::QFilterKey</a>, <a href="qt3drender-qframegraphnode.html">Qt3DRender::QFrameGraphNode</a>, <a href="qt3drender-qgeometry.html">Qt3DRender::QGeometry</a>, <a href="qt3drender-qparameter.html">Qt3DRender::QParameter</a>, <a href="qt3drender-qpickingsettings.html">Qt3DRender::QPickingSettings</a>, <a href="qt3drender-qrenderpass.html">Qt3DRender::QRenderPass</a>, <a href="qt3drender-qrenderstate.html">Qt3DRender::QRenderState</a>, <a href="qt3drender-qrendertargetoutput.html">Qt3DRender::QRenderTargetOutput</a>, <a href="qt3drender-qshaderprogram.html">Qt3DRender::QShaderProgram</a>, <a href="qt3drender-qshaderprogrambuilder.html">Qt3DRender::QShaderProgramBuilder</a>, <a href="qt3drender-qtechnique.html">Qt3DRender::QTechnique</a>, and <a href="qt3drender-quick-qscene2d.html">Qt3DRender::Quick::QScene2D</a></p>
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<li><a href="qt3dcore-qnode-members.html">List of all members, including inherited members</a></li>
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<a name="public-types"></a>
<h2 id="public-types">Public Types</h2>
<div class="table"><table class="alignedsummary">
<tr><td class="memItemLeft rightAlign topAlign"> enum </td><td class="memItemRight bottomAlign"><b><a href="qt3dcore-qnode.html#PropertyTrackingMode-enum">PropertyTrackingMode</a></b> { TrackFinalValues, DontTrackValues, TrackAllValues }</td></tr>
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<a name="properties"></a>
<h2 id="properties">Properties</h2>
<ul>
<li class="fn"><b><a href="qt3dcore-qnode.html#defaultPropertyTrackingMode-prop">defaultPropertyTrackingMode</a></b> : PropertyTrackingMode</li>
<li class="fn"><b><a href="qt3dcore-qnode.html#enabled-prop">enabled</a></b> : bool</li>
<li class="fn"><b><a href="qt3dcore-qnode.html#parent-prop">parent</a></b> : Qt3DCore::QNode*</li>
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<a name="public-functions"></a>
<h2 id="public-functions">Public Functions</h2>
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<tr><td class="memItemLeft rightAlign topAlign"> </td><td class="memItemRight bottomAlign"><b><a href="qt3dcore-qnode.html#QNode">QNode</a></b>(Qt3DCore::QNode *<i>parent</i> = nullptr)</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> bool </td><td class="memItemRight bottomAlign"><b><a href="qt3dcore-qnode.html#blockNotifications">blockNotifications</a></b>(bool <i>block</i>)</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> Qt3DCore::QNodeVector </td><td class="memItemRight bottomAlign"><b><a href="qt3dcore-qnode.html#childNodes">childNodes</a></b>() const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qt3dcore-qnode.html#clearPropertyTracking">clearPropertyTracking</a></b>(const QString &amp;<i>propertyName</i>)</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qt3dcore-qnode.html#clearPropertyTrackings">clearPropertyTrackings</a></b>()</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> Qt3DCore::QNode::PropertyTrackingMode </td><td class="memItemRight bottomAlign"><b><a href="qt3dcore-qnode.html#defaultPropertyTrackingMode-prop">defaultPropertyTrackingMode</a></b>() const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> Qt3DCore::QNodeId </td><td class="memItemRight bottomAlign"><b><a href="qt3dcore-qnode.html#id">id</a></b>() const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> bool </td><td class="memItemRight bottomAlign"><b><a href="qt3dcore-qnode.html#enabled-prop">isEnabled</a></b>() const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> bool </td><td class="memItemRight bottomAlign"><b><a href="qt3dcore-qnode.html#notificationsBlocked">notificationsBlocked</a></b>() const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> Qt3DCore::QNode *</td><td class="memItemRight bottomAlign"><b><a href="qt3dcore-qnode.html#parent-prop">parentNode</a></b>() const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> Qt3DCore::QNode::PropertyTrackingMode </td><td class="memItemRight bottomAlign"><b><a href="qt3dcore-qnode.html#propertyTracking">propertyTracking</a></b>(const QString &amp;<i>propertyName</i>) const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> QNodeCommand::CommandId </td><td class="memItemRight bottomAlign"><b><a href="qt3dcore-qnode.html#sendCommand">sendCommand</a></b>(const QString &amp;<i>name</i>, const QVariant &amp;<i>data</i> = QVariant(), QNodeCommand::CommandId <i>replyTo</i> = QNodeCommand::CommandId())</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qt3dcore-qnode.html#sendReply">sendReply</a></b>(const Qt3DCore::QNodeCommandPtr &amp;<i>command</i>)</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qt3dcore-qnode.html#setPropertyTracking">setPropertyTracking</a></b>(const QString &amp;<i>propertyName</i>, Qt3DCore::QNode::PropertyTrackingMode <i>trackMode</i>)</td></tr>
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<a name="public-slots"></a>
<h2 id="public-slots">Public Slots</h2>
<div class="table"><table class="alignedsummary">
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qt3dcore-qnode.html#defaultPropertyTrackingMode-prop">setDefaultPropertyTrackingMode</a></b>(Qt3DCore::QNode::PropertyTrackingMode <i>mode</i>)</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qt3dcore-qnode.html#enabled-prop">setEnabled</a></b>(bool <i>isEnabled</i>)</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qt3dcore-qnode.html#parent-prop">setParent</a></b>(Qt3DCore::QNode *<i>parent</i>)</td></tr>
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<a name="signals"></a>
<h2 id="signals">Signals</h2>
<div class="table"><table class="alignedsummary">
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qt3dcore-qnode.html#defaultPropertyTrackingMode-prop">defaultPropertyTrackingModeChanged</a></b>(Qt3DCore::QNode::PropertyTrackingMode <i>mode</i>)</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qt3dcore-qnode.html#enabled-prop">enabledChanged</a></b>(bool <i>enabled</i>)</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qt3dcore-qnode.html#nodeDestroyed">nodeDestroyed</a></b>()</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qt3dcore-qnode.html#parent-prop">parentChanged</a></b>(QObject *<i>parent</i>)</td></tr>
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<a name="static-public-members"></a>
<h2 id="static-public-members">Static Public Members</h2>
<div class="table"><table class="alignedsummary">
<tr><td class="memItemLeft rightAlign topAlign"> const QMetaObject </td><td class="memItemRight bottomAlign"><b><a href="qt3dcore-qnode.html#staticMetaObject-var">staticMetaObject</a></b></td></tr>
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<a name="protected-functions"></a>
<h2 id="protected-functions">Protected Functions</h2>
<div class="table"><table class="alignedsummary">
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qt3dcore-qnode.html#notifyObservers">notifyObservers</a></b>(const Qt3DCore::QSceneChangePtr &amp;<i>change</i>)</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual void </td><td class="memItemRight bottomAlign"><b><a href="qt3dcore-qnode.html#sceneChangeEvent">sceneChangeEvent</a></b>(const Qt3DCore::QSceneChangePtr &amp;<i>change</i>)</td></tr>
</table></div>
<a name="related-non-members"></a>
<h2 id="related-non-members">Related Non-Members</h2>
<div class="table"><table class="alignedsummary">
<tr><td class="memItemLeft rightAlign topAlign"> typedef </td><td class="memItemRight bottomAlign"><b><a href="qt3dcore-qnode.html#QNodePtr-typedef">QNodePtr</a></b></td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> typedef </td><td class="memItemRight bottomAlign"><b><a href="qt3dcore-qnode.html#QNodeVector-typedef">QNodeVector</a></b></td></tr>
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<a name="details"></a>
<!-- $$$QNode-description -->
<div class="descr">
<h2 id="details">Detailed Description</h2>
<p><a href="qt3dcore-qnode.html">QNode</a> is the base class of all Qt3D node classes used to build a Qt3D scene.</p>
<p>The owernship of <a href="qt3dcore-qnode.html">QNode</a> is determined by the QObject parent/child relationship between nodes. By itself, a <a href="qt3dcore-qnode.html">QNode</a> has no visual appearance and no particular meaning, it is there as a way of building a node based tree structure.</p>
<p>The parent of a <a href="qt3dcore-qnode.html">QNode</a> instance can only be another <a href="qt3dcore-qnode.html">QNode</a> instance.</p>
<p>Each <a href="qt3dcore-qnode.html">QNode</a> instance has a unique id that allows it to be recognizable from other instances.</p>
<p>When properties are defined on a <a href="qt3dcore-qnode.html">QNode</a> subclass, their NOTIFY signal will automatically generate notifications that the Qt3D backend aspects will receive.</p>
</div>
<p><b>See also </b><a href="qt3dcore-qentity.html">QEntity</a> and <a href="qt3dcore-qcomponent.html">QComponent</a>.</p>
<!-- @@@QNode -->
<div class="types">
<h2>Member Type Documentation</h2>
<!-- $$$PropertyTrackingMode$$$TrackFinalValues$$$DontTrackValues$$$TrackAllValues -->
<h3 class="fn" id="PropertyTrackingMode-enum"><a name="PropertyTrackingMode-enum"></a>enum QNode::<span class="name">PropertyTrackingMode</span></h3>
<p>Indicates how a <a href="qt3dcore-qnode.html">QNode</a> listens for property updates.</p>
<div class="table"><table class="valuelist"><tr valign="top" class="odd"><th class="tblConst">Constant</th><th class="tblval">Value</th><th class="tbldscr">Description</th></tr>
<tr><td class="topAlign"><code>Qt3DCore::QNode::TrackFinalValues</code></td><td class="topAlign tblval"><code>0</code></td><td class="topAlign">Tracks final values</td></tr>
<tr><td class="topAlign"><code>Qt3DCore::QNode::DontTrackValues</code></td><td class="topAlign tblval"><code>1</code></td><td class="topAlign">Does not track values</td></tr>
<tr><td class="topAlign"><code>Qt3DCore::QNode::TrackAllValues</code></td><td class="topAlign tblval"><code>2</code></td><td class="topAlign">Tracks all values</td></tr>
</table></div>
<!-- @@@PropertyTrackingMode -->
</div>
<div class="prop">
<h2>Property Documentation</h2>
<!-- $$$defaultPropertyTrackingMode-prop$$$defaultPropertyTrackingMode$$$setDefaultPropertyTrackingModeQt3DCore::QNode::PropertyTrackingMode$$$defaultPropertyTrackingModeChangedQt3DCore::QNode::PropertyTrackingMode -->
<h3 class="fn" id="defaultPropertyTrackingMode-prop"><a name="defaultPropertyTrackingMode-prop"></a><span class="name">defaultPropertyTrackingMode</span> : <span class="type"><a href="qt3dcore-qnode.html#PropertyTrackingMode-enum">PropertyTrackingMode</a></span></h3>
<p>Holds the default property tracking mode which determines whether a <a href="qt3dcore-qnode.html">QNode</a> should be listening for property updates. This only applies to properties which haven't been overridden by a call to <a href="qt3dcore-qnode.html#setPropertyTracking">setPropertyTracking</a>.</p>
<p>By default it is set to <a href="qt3dcore-qnode.html#PropertyTrackingMode-enum">QNode::TrackFinalValues</a></p>
<p><b>Access functions:</b></p>
<div class="table"><table class="alignedsummary">
<tr><td class="memItemLeft topAlign rightAlign"> Qt3DCore::QNode::PropertyTrackingMode </td><td class="memItemRight bottomAlign"><span class="name"><b>defaultPropertyTrackingMode</b></span>() const</td></tr>
<tr><td class="memItemLeft topAlign rightAlign"> void </td><td class="memItemRight bottomAlign"><span class="name"><b>setDefaultPropertyTrackingMode</b></span>(Qt3DCore::QNode::PropertyTrackingMode <i>mode</i>)</td></tr>
</table></div>
<p><b>Notifier signal:</b></p>
<div class="table"><table class="alignedsummary">
<tr><td class="memItemLeft topAlign rightAlign"> void </td><td class="memItemRight bottomAlign"><span class="name"><b>defaultPropertyTrackingModeChanged</b></span>(Qt3DCore::QNode::PropertyTrackingMode <i>mode</i>)</td></tr>
</table></div>
<!-- @@@defaultPropertyTrackingMode -->
<!-- $$$enabled-prop$$$isEnabled$$$setEnabledbool$$$enabledChangedbool -->
<h3 class="fn" id="enabled-prop"><a name="enabled-prop"></a><span class="name">enabled</span> : <span class="type">bool</span></h3>
<p>Holds the <a href="qt3dcore-qnode.html">QNode</a> enabled flag. By default a <a href="qt3dcore-qnode.html">QNode</a> is always enabled.</p>
<p><b>Note: </b>the interpretation of what enabled means is aspect-dependent. Even if enabled is set to <code>false</code>, some aspects may still consider the node in some manner. This is documented on a class by class basis.</p><p><b>Access functions:</b></p>
<div class="table"><table class="alignedsummary">
<tr><td class="memItemLeft topAlign rightAlign"> bool </td><td class="memItemRight bottomAlign"><span class="name"><b>isEnabled</b></span>() const</td></tr>
<tr><td class="memItemLeft topAlign rightAlign"> void </td><td class="memItemRight bottomAlign"><span class="name"><b>setEnabled</b></span>(bool <i>isEnabled</i>)</td></tr>
</table></div>
<p><b>Notifier signal:</b></p>
<div class="table"><table class="alignedsummary">
<tr><td class="memItemLeft topAlign rightAlign"> void </td><td class="memItemRight bottomAlign"><span class="name"><b>enabledChanged</b></span>(bool <i>enabled</i>)</td></tr>
</table></div>
<!-- @@@enabled -->
<!-- $$$parent-prop$$$parentNode$$$setParentQt3DCore::QNode*$$$parentChangedQObject* -->
<h3 class="fn" id="parent-prop"><a name="parent-prop"></a><span class="name">parent</span> : <span class="type"><a href="qt3dcore-qnode.html">Qt3DCore::QNode</a></span>*</h3>
<p>Holds the immediate <a href="qt3dcore-qnode.html">QNode</a> parent, or null if the node has no parent.</p>
<p>Setting the parent will notify the backend aspects about current <a href="qt3dcore-qnode.html">QNode</a> instance's parent change.</p>
<p><b>Note: </b>if <i>parent</i> happens to be null, this will actually notify that the current <a href="qt3dcore-qnode.html">QNode</a> instance was removed from the scene.</p><p><b>Access functions:</b></p>
<div class="table"><table class="alignedsummary">
<tr><td class="memItemLeft topAlign rightAlign"> Qt3DCore::QNode *</td><td class="memItemRight bottomAlign"><span class="name"><b>parentNode</b></span>() const</td></tr>
<tr><td class="memItemLeft topAlign rightAlign"> void </td><td class="memItemRight bottomAlign"><span class="name"><b>setParent</b></span>(Qt3DCore::QNode *<i>parent</i>)</td></tr>
</table></div>
<p><b>Notifier signal:</b></p>
<div class="table"><table class="alignedsummary">
<tr><td class="memItemLeft topAlign rightAlign"> void </td><td class="memItemRight bottomAlign"><span class="name"><b>parentChanged</b></span>(QObject *<i>parent</i>)</td></tr>
</table></div>
<!-- @@@parent -->
</div>
<div class="func">
<h2>Member Function Documentation</h2>
<!-- $$$QNode[overload1]$$$QNodeQt3DCore::QNode* -->
<h3 class="fn" id="QNode"><a name="QNode"></a>QNode::<span class="name">QNode</span>(<span class="type"><a href="qt3dcore-qnode.html">Qt3DCore::QNode</a></span> *<i>parent</i> = nullptr)</h3>
<p>Creates a new <a href="qt3dcore-qnode.html">QNode</a> instance with parent <i>parent</i>.</p>
<p><b>Note: </b>The backend aspects will be notified that a <a href="qt3dcore-qnode.html">QNode</a> instance is part of the scene only if it has a parent; unless this is the root node of the Qt3D scene.</p><p><b>See also </b><a href="qt3dcore-qnode.html#parent-prop">setParent</a>().</p>
<!-- @@@QNode -->
<!-- $$$blockNotifications[overload1]$$$blockNotificationsbool -->
<h3 class="fn" id="blockNotifications"><a name="blockNotifications"></a><span class="type">bool</span> QNode::<span class="name">blockNotifications</span>(<span class="type">bool</span> <i>block</i>)</h3>
<p>If <i>block</i> is <code>true</code>, property change notifications sent by this object to aspects are blocked. If <i>block</i> is <code>false</code>, no such blocking will occur.</p>
<p>The return value is the previous value of <a href="qt3dcore-qnode.html#notificationsBlocked">notificationsBlocked</a>().</p>
<p>Note that the other notification types will be sent even if the notifications for this object have been blocked.</p>
<p><b>See also </b><a href="qt3dcore-qnode.html#notificationsBlocked">notificationsBlocked</a>().</p>
<!-- @@@blockNotifications -->
<!-- $$$childNodes[overload1]$$$childNodes -->
<h3 class="fn" id="childNodes"><a name="childNodes"></a><span class="type"><a href="qt3dcore-qnode.html#QNodeVector-typedef">Qt3DCore::QNodeVector</a></span> QNode::<span class="name">childNodes</span>() const</h3>
<p>Returns a list filled with the <a href="qt3dcore-qnode.html">QNode</a> children of the current <a href="qt3dcore-qnode.html">QNode</a> instance.</p>
<!-- @@@childNodes -->
<!-- $$$clearPropertyTracking[overload1]$$$clearPropertyTrackingconstQString& -->
<h3 class="fn" id="clearPropertyTracking"><a name="clearPropertyTracking"></a><span class="type">void</span> QNode::<span class="name">clearPropertyTracking</span>(const <span class="type">QString</span> &amp;<i>propertyName</i>)</h3>
<!-- @@@clearPropertyTracking -->
<!-- $$$clearPropertyTrackings[overload1]$$$clearPropertyTrackings -->
<h3 class="fn" id="clearPropertyTrackings"><a name="clearPropertyTrackings"></a><span class="type">void</span> QNode::<span class="name">clearPropertyTrackings</span>()</h3>
<!-- @@@clearPropertyTrackings -->
<!-- $$$id[overload1]$$$id -->
<h3 class="fn" id="id"><a name="id"></a><span class="type"><a href="qt3dcore-qnodeid.html">Qt3DCore::QNodeId</a></span> QNode::<span class="name">id</span>() const</h3>
<p>Returns the id that uniquely identifies the <a href="qt3dcore-qnode.html">QNode</a> instance.</p>
<!-- @@@id -->
<!-- $$$nodeDestroyed[overload1]$$$nodeDestroyed -->
<h3 class="fn" id="nodeDestroyed"><a name="nodeDestroyed"></a><code>[signal] </code><span class="type">void</span> QNode::<span class="name">nodeDestroyed</span>()</h3>
<!-- @@@nodeDestroyed -->
<!-- $$$notificationsBlocked[overload1]$$$notificationsBlocked -->
<h3 class="fn" id="notificationsBlocked"><a name="notificationsBlocked"></a><span class="type">bool</span> QNode::<span class="name">notificationsBlocked</span>() const</h3>
<p>Returns <code>true</code> if aspect notifications are blocked; otherwise returns <code>false</code>. By default, notifications are <i>not</i> blocked.</p>
<p><b>See also </b><a href="qt3dcore-qnode.html#blockNotifications">blockNotifications</a>().</p>
<!-- @@@notificationsBlocked -->
<!-- $$$notifyObservers[overload1]$$$notifyObserversconstQt3DCore::QSceneChangePtr& -->
<h3 class="fn" id="notifyObservers"><a name="notifyObservers"></a><code>[protected] </code><span class="type">void</span> QNode::<span class="name">notifyObservers</span>(const <span class="type"><a href="qt3dcore-qscenechange.html#QSceneChangePtr-typedef">Qt3DCore::QSceneChangePtr</a></span> &amp;<i>change</i>)</h3>
<p>Sends the <i>change</i> <a href="qt3dcore-qscenechange.html#QSceneChangePtr-typedef">QSceneChangePtr</a> to any QBackendNodes in the registered aspects that correspond to this <a href="qt3dcore-qnode.html">QNode</a>.</p>
<p>For the common case of a QObject property change, <a href="qt3dcore-qnode.html">QNode</a> handles this for you automatically by sending a <a href="qt3dcore-qpropertyupdatedchange.html">QPropertyUpdatedChange</a> event to the backend nodes. You only need to call this function if you wish to send a specific type of change in place of the automatic handling.</p>
<!-- @@@notifyObservers -->
<!-- $$$propertyTracking[overload1]$$$propertyTrackingconstQString& -->
<h3 class="fn" id="propertyTracking"><a name="propertyTracking"></a><span class="type"><a href="qt3dcore-qnode.html#PropertyTrackingMode-enum">Qt3DCore::QNode::PropertyTrackingMode</a></span> QNode::<span class="name">propertyTracking</span>(const <span class="type">QString</span> &amp;<i>propertyName</i>) const</h3>
<p><b>See also </b><a href="qt3dcore-qnode.html#setPropertyTracking">setPropertyTracking</a>().</p>
<!-- @@@propertyTracking -->
<!-- $$$sceneChangeEvent[overload1]$$$sceneChangeEventconstQt3DCore::QSceneChangePtr& -->
<h3 class="fn" id="sceneChangeEvent"><a name="sceneChangeEvent"></a><code>[virtual protected] </code><span class="type">void</span> QNode::<span class="name">sceneChangeEvent</span>(const <span class="type"><a href="qt3dcore-qscenechange.html#QSceneChangePtr-typedef">Qt3DCore::QSceneChangePtr</a></span> &amp;<i>change</i>)</h3>
<p>Called when one or more backend aspects sends a notification <i>change</i> to the current <a href="qt3dcore-qnode.html">Qt3DCore::QNode</a> instance.</p>
<p><b>Note: </b>This method should be reimplemented in your subclasses to properly handle the <i>change</i>.</p><!-- @@@sceneChangeEvent -->
<!-- $$$sendCommand[overload1]$$$sendCommandconstQString&constQVariant&QNodeCommand::CommandId -->
<h3 class="fn" id="sendCommand"><a name="sendCommand"></a><span class="type"><a href="qt3dcore-qnodecommand.html#CommandId-typedef">QNodeCommand::CommandId</a></span> QNode::<span class="name">sendCommand</span>(const <span class="type">QString</span> &amp;<i>name</i>, const <span class="type">QVariant</span> &amp;<i>data</i> = QVariant(), <span class="type"><a href="qt3dcore-qnodecommand.html#CommandId-typedef">QNodeCommand::CommandId</a></span> <i>replyTo</i> = QNodeCommand::CommandId())</h3>
<p>Sends a command message to the backend node</p>
<p>Creates a <a href="qt3dcore-qnodecommand.html">QNodeCommand</a> message and dispatches it to the backend node. The command is given and a <i>name</i> and some <i>data</i> which can be used in the backend node to perform various operations. This returns a CommandId which can be used to identify the initial command when receiving a message in reply. If the command message is to be sent in reply to another command, <i>replyTo</i> contains the id of that command.</p>
<p><b>See also </b><a href="qt3dcore-qnodecommand.html">QNodeCommand</a> and <a href="qt3dcore-qnode.html#sendReply">QNode::sendReply</a>.</p>
<!-- @@@sendCommand -->
<!-- $$$sendReply[overload1]$$$sendReplyconstQt3DCore::QNodeCommandPtr& -->
<h3 class="fn" id="sendReply"><a name="sendReply"></a><span class="type">void</span> QNode::<span class="name">sendReply</span>(const <span class="type"><a href="qt3dcore-qnodecommand.html#QNodeCommandPtr-typedef">Qt3DCore::QNodeCommandPtr</a></span> &amp;<i>command</i>)</h3>
<p>Send a <i>command</i> back to the backend node.</p>
<p>Assumes the command is to be to sent back in reply to itself to the backend node.</p>
<p><b>See also </b><a href="qt3dcore-qnodecommand.html">QNodeCommand</a> and <a href="qt3dcore-qnode.html#sendCommand">QNode::sendCommand</a>.</p>
<!-- @@@sendReply -->
<!-- $$$setPropertyTracking[overload1]$$$setPropertyTrackingconstQString&Qt3DCore::QNode::PropertyTrackingMode -->
<h3 class="fn" id="setPropertyTracking"><a name="setPropertyTracking"></a><span class="type">void</span> QNode::<span class="name">setPropertyTracking</span>(const <span class="type">QString</span> &amp;<i>propertyName</i>, <span class="type"><a href="qt3dcore-qnode.html#PropertyTrackingMode-enum">Qt3DCore::QNode::PropertyTrackingMode</a></span> <i>trackMode</i>)</h3>
<p><b>See also </b><a href="qt3dcore-qnode.html#propertyTracking">propertyTracking</a>().</p>
<!-- @@@setPropertyTracking -->
</div>
<div class="relnonmem">
<h2>Related Non-Members</h2>
<!-- $$$QNodePtr -->
<h3 class="fn" id="QNodePtr-typedef"><a name="QNodePtr-typedef"></a>typedef Qt3DCore::<span class="name">QNodePtr</span></h3>
<p>A shared pointer for <a href="qt3dcore-qnode.html">QNode</a>.</p>
<!-- @@@QNodePtr -->
<!-- $$$QNodeVector -->
<h3 class="fn" id="QNodeVector-typedef"><a name="QNodeVector-typedef"></a>typedef Qt3DCore::<span class="name">QNodeVector</span></h3>
<p>List of <a href="qt3dcore-qnode.html">QNode</a> pointers.</p>
<!-- @@@QNodeVector -->
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