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<a href="#pub-methods">Public Member Functions</a> &#124;
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<div class="title">QCPLayerable Class Reference<span class="mlabels"><span class="mlabel">abstract</span></span></div>  </div>
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<p>Base class for all drawable objects.  
 <a href="class_q_c_p_layerable.html#details">More...</a></p>
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Inheritance diagram for QCPLayerable:</div>
<div class="dyncontent">
 <div class="center">
  <img src="class_q_c_p_layerable.png" usemap="#QCPLayerable_map" alt=""/>
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<area href="class_q_c_p_abstract_item.html" title="The abstract base class for all items in a plot. " alt="QCPAbstractItem" shape="rect" coords="0,112,150,136"/>
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 </div></div>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a>
Public Member Functions</h2></td></tr>
<tr class="memitem:a76592e80a4657e03da4bfd91aab91ef3"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_q_c_p_layerable.html#a76592e80a4657e03da4bfd91aab91ef3">QCPLayerable</a> (<a class="el" href="class_q_custom_plot.html">QCustomPlot</a> *plot, QString targetLayer=&quot;&quot;, <a class="el" href="class_q_c_p_layerable.html">QCPLayerable</a> *<a class="el" href="class_q_c_p_layerable.html#a98d79f5b716d45eac4347befe546d0ec">parentLayerable</a>=0)</td></tr>
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<tr class="memitem:a10a3cc92e0fa63e4a929e61d34e275a7"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a10a3cc92e0fa63e4a929e61d34e275a7"></a>
bool&#160;</td><td class="memItemRight" valign="bottom"><b>visible</b> () const </td></tr>
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<tr class="memitem:ab7e0e94461566093d36ffc0f5312b109"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="ab7e0e94461566093d36ffc0f5312b109"></a>
<a class="el" href="class_q_custom_plot.html">QCustomPlot</a> *&#160;</td><td class="memItemRight" valign="bottom"><b>parentPlot</b> () const </td></tr>
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<tr class="memitem:a98d79f5b716d45eac4347befe546d0ec"><td class="memItemLeft" align="right" valign="top"><a class="el" href="class_q_c_p_layerable.html">QCPLayerable</a> *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_q_c_p_layerable.html#a98d79f5b716d45eac4347befe546d0ec">parentLayerable</a> () const </td></tr>
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<tr class="memitem:aea67e8c19145e70d68c286a36f6b8300"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="aea67e8c19145e70d68c286a36f6b8300"></a>
<a class="el" href="class_q_c_p_layer.html">QCPLayer</a> *&#160;</td><td class="memItemRight" valign="bottom"><b>layer</b> () const </td></tr>
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<tr class="memitem:aef5cb4aa899ed9dc9384fd614560291e"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="aef5cb4aa899ed9dc9384fd614560291e"></a>
bool&#160;</td><td class="memItemRight" valign="bottom"><b>antialiased</b> () const </td></tr>
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<tr class="memitem:a3bed99ddc396b48ce3ebfdc0418744f8"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_q_c_p_layerable.html#a3bed99ddc396b48ce3ebfdc0418744f8">setVisible</a> (bool on)</td></tr>
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<tr class="memitem:ab0d0da6d2de45a118886d2c8e16d5a54"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_q_c_p_layerable.html#ab0d0da6d2de45a118886d2c8e16d5a54">setLayer</a> (<a class="el" href="class_q_c_p_layer.html">QCPLayer</a> *layer)</td></tr>
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<tr class="memitem:ab25a0e7b897993b44447caee0f142083"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_q_c_p_layerable.html#ab25a0e7b897993b44447caee0f142083">setLayer</a> (const QString &amp;layerName)</td></tr>
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<tr class="memitem:a4fd43e89be4a553ead41652565ff0581"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_q_c_p_layerable.html#a4fd43e89be4a553ead41652565ff0581">setAntialiased</a> (bool enabled)</td></tr>
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<tr class="memitem:a4001c4d0dfec55598efa4d531f2179a9"><td class="memItemLeft" align="right" valign="top">virtual double&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_q_c_p_layerable.html#a4001c4d0dfec55598efa4d531f2179a9">selectTest</a> (const QPointF &amp;pos, bool onlySelectable, QVariant *details=0) const </td></tr>
<tr class="separator:a4001c4d0dfec55598efa4d531f2179a9"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a30809f7455e9794bca7b6c737622fa63"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_q_c_p_layerable.html#a30809f7455e9794bca7b6c737622fa63">realVisibility</a> () const </td></tr>
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</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pro-methods"></a>
Protected Member Functions</h2></td></tr>
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virtual void&#160;</td><td class="memItemRight" valign="bottom"><b>parentPlotInitialized</b> (<a class="el" href="class_q_custom_plot.html">QCustomPlot</a> *parentPlot)</td></tr>
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<tr class="memitem:aa4035e586b7f317a06ba7e74e242a5ea"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="aa4035e586b7f317a06ba7e74e242a5ea"></a>
virtual <a class="el" href="namespace_q_c_p.html#a2ad6bb6281c7c2d593d4277b44c2b037">QCP::Interaction</a>&#160;</td><td class="memItemRight" valign="bottom"><b>selectionCategory</b> () const </td></tr>
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virtual QRect&#160;</td><td class="memItemRight" valign="bottom"><b>clipRect</b> () const </td></tr>
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virtual void&#160;</td><td class="memItemRight" valign="bottom"><b>applyDefaultAntialiasingHint</b> (<a class="el" href="class_q_c_p_painter.html">QCPPainter</a> *painter) const =0</td></tr>
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virtual void&#160;</td><td class="memItemRight" valign="bottom"><b>draw</b> (<a class="el" href="class_q_c_p_painter.html">QCPPainter</a> *painter)=0</td></tr>
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<tr class="memitem:a7498c2d0d081cf7cad0fb3bb93aa0e91"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a7498c2d0d081cf7cad0fb3bb93aa0e91"></a>
virtual void&#160;</td><td class="memItemRight" valign="bottom"><b>selectEvent</b> (QMouseEvent *event, bool additive, const QVariant &amp;details, bool *selectionStateChanged)</td></tr>
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virtual void&#160;</td><td class="memItemRight" valign="bottom"><b>deselectEvent</b> (bool *selectionStateChanged)</td></tr>
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void&#160;</td><td class="memItemRight" valign="bottom"><b>initializeParentPlot</b> (<a class="el" href="class_q_custom_plot.html">QCustomPlot</a> *parentPlot)</td></tr>
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void&#160;</td><td class="memItemRight" valign="bottom"><b>setParentLayerable</b> (<a class="el" href="class_q_c_p_layerable.html">QCPLayerable</a> *<a class="el" href="class_q_c_p_layerable.html#a98d79f5b716d45eac4347befe546d0ec">parentLayerable</a>)</td></tr>
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<tr class="memitem:af94484cfb7cbbddb7de522e9be71d9a4"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="af94484cfb7cbbddb7de522e9be71d9a4"></a>
bool&#160;</td><td class="memItemRight" valign="bottom"><b>moveToLayer</b> (<a class="el" href="class_q_c_p_layer.html">QCPLayer</a> *layer, bool prepend)</td></tr>
<tr class="separator:af94484cfb7cbbddb7de522e9be71d9a4"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a62bd552d1a45aa9accb24b310542279e"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a62bd552d1a45aa9accb24b310542279e"></a>
void&#160;</td><td class="memItemRight" valign="bottom"><b>applyAntialiasingHint</b> (<a class="el" href="class_q_c_p_painter.html">QCPPainter</a> *painter, bool localAntialiased, <a class="el" href="namespace_q_c_p.html#ae55dbe315d41fe80f29ba88100843a0c">QCP::AntialiasedElement</a> overrideElement) const </td></tr>
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</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pro-attribs"></a>
Protected Attributes</h2></td></tr>
<tr class="memitem:a62e3aed8427d6ce3ccf716f285106cb3"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a62e3aed8427d6ce3ccf716f285106cb3"></a>
bool&#160;</td><td class="memItemRight" valign="bottom"><b>mVisible</b></td></tr>
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<a class="el" href="class_q_custom_plot.html">QCustomPlot</a> *&#160;</td><td class="memItemRight" valign="bottom"><b>mParentPlot</b></td></tr>
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QPointer&lt; <a class="el" href="class_q_c_p_layerable.html">QCPLayerable</a> &gt;&#160;</td><td class="memItemRight" valign="bottom"><b>mParentLayerable</b></td></tr>
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<a class="el" href="class_q_c_p_layer.html">QCPLayer</a> *&#160;</td><td class="memItemRight" valign="bottom"><b>mLayer</b></td></tr>
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bool&#160;</td><td class="memItemRight" valign="bottom"><b>mAntialiased</b></td></tr>
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Friends</h2></td></tr>
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class&#160;</td><td class="memItemRight" valign="bottom"><b>QCustomPlot</b></td></tr>
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class&#160;</td><td class="memItemRight" valign="bottom"><b>QCPAxisRect</b></td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>Base class for all drawable objects. </p>
<p>This is the abstract base class most visible objects derive from, e.g. plottables, axes, grid etc.</p>
<p>Every layerable is on a layer (<a class="el" href="class_q_c_p_layer.html" title="A layer that may contain objects, to control the rendering order. ">QCPLayer</a>) which allows controlling the rendering order by stacking the layers accordingly.</p>
<p>For details about the layering mechanism, see the <a class="el" href="class_q_c_p_layer.html" title="A layer that may contain objects, to control the rendering order. ">QCPLayer</a> documentation. </p>
</div><h2 class="groupheader">Constructor &amp; Destructor Documentation</h2>
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<p>Creates a new <a class="el" href="class_q_c_p_layerable.html" title="Base class for all drawable objects. ">QCPLayerable</a> instance.</p>
<p>Since <a class="el" href="class_q_c_p_layerable.html" title="Base class for all drawable objects. ">QCPLayerable</a> is an abstract base class, it can't be instantiated directly. Use one of the derived classes.</p>
<p>If <em>plot</em> is provided, it automatically places itself on the layer named <em>targetLayer</em>. If <em>targetLayer</em> is an empty string, it places itself on the current layer of the plot (see <a class="el" href="class_q_custom_plot.html#a73a6dc47c653bb6f8f030abca5a11852">QCustomPlot::setCurrentLayer</a>).</p>
<p>It is possible to provide 0 as <em>plot</em>. In that case, you should assign a parent plot at a later time with initializeParentPlot.</p>
<p>The layerable's parent layerable is set to <em>parentLayerable</em>, if provided. Direct layerable parents are mainly used to control visibility in a hierarchy of layerables. This means a layerable is only drawn, if all its ancestor layerables are also visible. Note that <em>parentLayerable</em> does not become the QObject-parent (for memory management) of this layerable, <em>plot</em> does. </p>

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<h2 class="groupheader">Member Function Documentation</h2>
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<p>Returns the parent layerable of this layerable. The parent layerable is used to provide visibility hierarchies in conjunction with the method <a class="el" href="class_q_c_p_layerable.html#a30809f7455e9794bca7b6c737622fa63">realVisibility</a>. This way, layerables only get drawn if their parent layerables are visible, too.</p>
<p>Note that a parent layerable is not necessarily also the QObject parent for memory management. Further, a layerable doesn't always have a parent layerable, so this function may return 0.</p>
<p>A parent layerable is set implicitly with when placed inside layout elements and doesn't need to be set manually by the user. </p>

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<p>Returns whether this layerable is visible, taking possible direct layerable parent visibility into account. This is the method that is consulted to decide whether a layerable shall be drawn or not.</p>
<p>If this layerable has a direct layerable parent (usually set via hierarchies implemented in subclasses, like in the case of <a class="el" href="class_q_c_p_layout_element.html" title="The abstract base class for all objects that form the layout system. ">QCPLayoutElement</a>), this function returns true only if this layerable has its visibility set to true and the parent layerable's <a class="el" href="class_q_c_p_layerable.html#a30809f7455e9794bca7b6c737622fa63">realVisibility</a> returns true.</p>
<p>If this layerable doesn't have a direct layerable parent, returns the state of this layerable's visibility. </p>

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<p>This function is used to decide whether a click hits a layerable object or not.</p>
<p><em>pos</em> is a point in pixel coordinates on the <a class="el" href="class_q_custom_plot.html" title="The central class of the library. This is the QWidget which displays the plot and interacts with the ...">QCustomPlot</a> surface. This function returns the shortest pixel distance of this point to the object. If the object is either invisible or the distance couldn't be determined, -1.0 is returned. Further, if <em>onlySelectable</em> is true and the object is not selectable, -1.0 is returned, too.</p>
<p>If the item is represented not by single lines but by an area like <a class="el" href="class_q_c_p_item_rect.html" title="A rectangle. ">QCPItemRect</a> or <a class="el" href="class_q_c_p_item_text.html" title="A text label. ">QCPItemText</a>, a click inside the area returns a constant value greater zero (typically the selectionTolerance of the parent <a class="el" href="class_q_custom_plot.html" title="The central class of the library. This is the QWidget which displays the plot and interacts with the ...">QCustomPlot</a> multiplied by 0.99). If the click lies outside the area, this function returns -1.0.</p>
<p>Providing a constant value for area objects allows selecting line objects even when they are obscured by such area objects, by clicking close to the lines (i.e. closer than 0.99*selectionTolerance).</p>
<p>The actual setting of the selection state is not done by this function. This is handled by the parent <a class="el" href="class_q_custom_plot.html" title="The central class of the library. This is the QWidget which displays the plot and interacts with the ...">QCustomPlot</a> when the mouseReleaseEvent occurs, and the finally selected object is notified via the selectEvent/deselectEvent methods.</p>
<p><em>details</em> is an optional output parameter. Every layerable subclass may place any information in <em>details</em>. This information will be passed to selectEvent when the parent <a class="el" href="class_q_custom_plot.html" title="The central class of the library. This is the QWidget which displays the plot and interacts with the ...">QCustomPlot</a> decides on the basis of this selectTest call, that the object was successfully selected. The subsequent call to selectEvent will carry the <em>details</em>. This is useful for multi-part objects (like <a class="el" href="class_q_c_p_axis.html" title="Manages a single axis inside a QCustomPlot. ">QCPAxis</a>). This way, a possibly complex calculation to decide which part was clicked is only done once in <a class="el" href="class_q_c_p_layerable.html#a4001c4d0dfec55598efa4d531f2179a9">selectTest</a>. The result (i.e. the actually clicked part) can then be placed in <em>details</em>. So in the subsequent selectEvent, the decision which part was selected doesn't have to be done a second time for a single selection operation.</p>
<p>You may pass 0 as <em>details</em> to indicate that you are not interested in those selection details.</p>
<dl class="section see"><dt>See also</dt><dd>selectEvent, deselectEvent, <a class="el" href="class_q_custom_plot.html#a5ee1e2f6ae27419deca53e75907c27e5">QCustomPlot::setInteractions</a> </dd></dl>

<p>Reimplemented in <a class="el" href="class_q_c_p_plot_title.html#a5b7ae716be9134a48f4e378feb0e6699">QCPPlotTitle</a>, <a class="el" href="class_q_c_p_legend.html#aa3892801051bc7b985e003576df844db">QCPLegend</a>, <a class="el" href="class_q_c_p_abstract_legend_item.html#ad0480d5cad34627a294a2921caa4a62f">QCPAbstractLegendItem</a>, <a class="el" href="class_q_c_p_item_bracket.html#aa6933caff1d42c54bcebc769ef88c798">QCPItemBracket</a>, <a class="el" href="class_q_c_p_item_tracer.html#ae71f3728421c83c188c117279ca050fd">QCPItemTracer</a>, <a class="el" href="class_q_c_p_item_pixmap.html#a9f8436aa141fa0fb504191c882c2f4d9">QCPItemPixmap</a>, <a class="el" href="class_q_c_p_item_ellipse.html#acd7e5f9528630b2ab5987e2a5782eb7c">QCPItemEllipse</a>, <a class="el" href="class_q_c_p_item_text.html#a285b95bb6634c2e4f7768abb7a8bc69c">QCPItemText</a>, <a class="el" href="class_q_c_p_item_rect.html#af13b0797079b40b73d1c7286b76f18ac">QCPItemRect</a>, <a class="el" href="class_q_c_p_item_curve.html#a741375c11667b5f9c95b2683f93ee514">QCPItemCurve</a>, <a class="el" href="class_q_c_p_item_line.html#a7541e5d9378ca121d07b0df3b24f7178">QCPItemLine</a>, <a class="el" href="class_q_c_p_item_straight_line.html#a64cc3796f58ce856012732603edb2f1c">QCPItemStraightLine</a>, <a class="el" href="class_q_c_p_statistical_box.html#a7d3ac843dc48a085740fdfc4319a89cc">QCPStatisticalBox</a>, <a class="el" href="class_q_c_p_bars.html#a0d37a9feb1d0baf73ce6e809db214445">QCPBars</a>, <a class="el" href="class_q_c_p_curve.html#a5af9949e725704811bbc81ecd5970b8e">QCPCurve</a>, <a class="el" href="class_q_c_p_graph.html#abc9ff375aabcf2d21cca33d6baf85772">QCPGraph</a>, <a class="el" href="class_q_c_p_abstract_item.html#a96d522d10ffc0413b9a366c6f7f0476b">QCPAbstractItem</a>, <a class="el" href="class_q_c_p_abstract_plottable.html#a38efe9641d972992a3d44204bc80ec1d">QCPAbstractPlottable</a>, <a class="el" href="class_q_c_p_axis.html#a2877a6230920c118be65c6113089f467">QCPAxis</a>, <a class="el" href="class_q_c_p_layout_inset.html#ab5a2f2b88c05e369fd7da9583d17aa3a">QCPLayoutInset</a>, and <a class="el" href="class_q_c_p_layout_element.html#a9fcf5d0ea19f2c23b2b528bce2c6f095">QCPLayoutElement</a>.</p>

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<p>Sets whether this object will be drawn antialiased or not.</p>
<p>Note that antialiasing settings may be overridden by <a class="el" href="class_q_custom_plot.html#af6f91e5eab1be85f67c556e98c3745e8">QCustomPlot::setAntialiasedElements</a> and <a class="el" href="class_q_custom_plot.html#ae10d685b5eabea2999fb8775ca173c24">QCustomPlot::setNotAntialiasedElements</a>. </p>

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<p>Sets the <em>layer</em> of this layerable object. The object will be placed on top of the other objects already on <em>layer</em>.</p>
<p>Returns true on success, i.e. if <em>layer</em> is a valid layer. </p>

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<p>This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. Sets the layer of this layerable object by name</p>
<p>Returns true on success, i.e. if <em>layerName</em> is a valid layer name. </p>

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<p>Sets the visibility of this layerable object. If an object is not visible, it will not be drawn on the <a class="el" href="class_q_custom_plot.html" title="The central class of the library. This is the QWidget which displays the plot and interacts with the ...">QCustomPlot</a> surface, and user interaction with it (e.g. click and selection) is not possible. </p>

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<hr/>The documentation for this class was generated from the following files:<ul>
<li><a class="el" href="qcustomplot_8h_source.html">qcustomplot.h</a></li>
<li><a class="el" href="qcustomplot_8cpp.html">qcustomplot.cpp</a></li>
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