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<p>Canvas of a <a class="el" href="class_qwt_polar_plot.html" title="A plotting widget, displaying a polar coordinate system.">QwtPolarPlot</a>.
<a href="class_qwt_polar_canvas.html#details">More...</a></p>
<p><code>#include &lt;<a class="el" href="qwt__polar__canvas_8h_source.html">qwt_polar_canvas.h</a>&gt;</code></p>
<div class="dynheader">
Inheritance diagram for QwtPolarCanvas:</div>
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<div class="center"><iframe scrolling="no" frameborder="0" src="class_qwt_polar_canvas__inherit__graph.svg" width="131" height="112"><p><b>This browser is not able to show SVG: try Firefox, Chrome, Safari, or Opera instead.</b></p></iframe>
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<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-types"></a>
Public Types</h2></td></tr>
<tr class="memitem:a371f88face8daaac6cd556e5f7596613"><td class="memItemLeft" align="right" valign="top">enum &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_polar_canvas.html#a371f88face8daaac6cd556e5f7596613">PaintAttribute</a> { <a class="el" href="class_qwt_polar_canvas.html#a371f88face8daaac6cd556e5f7596613ab8c07aaa7ba2c8833fd4d0cfd9955829">BackingStore</a> = 0x01
}</td></tr>
<tr class="memdesc:a371f88face8daaac6cd556e5f7596613"><td class="mdescLeft">&#160;</td><td class="mdescRight">Paint attributes. <a href="class_qwt_polar_canvas.html#a371f88face8daaac6cd556e5f7596613">More...</a><br /></td></tr>
<tr class="separator:a371f88face8daaac6cd556e5f7596613"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a1fe73f1cc6086c16dbbce571db807a6a"><td class="memItemLeft" align="right" valign="top">typedef QFlags&lt; <a class="el" href="class_qwt_polar_canvas.html#a371f88face8daaac6cd556e5f7596613">PaintAttribute</a> &gt;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_polar_canvas.html#a1fe73f1cc6086c16dbbce571db807a6a">PaintAttributes</a></td></tr>
<tr class="separator:a1fe73f1cc6086c16dbbce571db807a6a"><td class="memSeparator" colspan="2">&#160;</td></tr>
</table><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:aa5f39d822a71e056b4735da113a0a4e5"><td class="memItemLeft" align="right" valign="top"><a id="aa5f39d822a71e056b4735da113a0a4e5"></a>
&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_polar_canvas.html#aa5f39d822a71e056b4735da113a0a4e5">QwtPolarCanvas</a> (<a class="el" href="class_qwt_polar_plot.html">QwtPolarPlot</a> *)</td></tr>
<tr class="memdesc:aa5f39d822a71e056b4735da113a0a4e5"><td class="mdescLeft">&#160;</td><td class="mdescRight">Constructor. <br /></td></tr>
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<tr class="memitem:aaf0b8442dc8b32353d7705c9dcc28bc0"><td class="memItemLeft" align="right" valign="top"><a id="aaf0b8442dc8b32353d7705c9dcc28bc0"></a>
virtual&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_polar_canvas.html#aaf0b8442dc8b32353d7705c9dcc28bc0">~QwtPolarCanvas</a> ()</td></tr>
<tr class="memdesc:aaf0b8442dc8b32353d7705c9dcc28bc0"><td class="mdescLeft">&#160;</td><td class="mdescRight">Destructor. <br /></td></tr>
<tr class="separator:aaf0b8442dc8b32353d7705c9dcc28bc0"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a2f3dc31a8c28390e3a7ec13cab60250e"><td class="memItemLeft" align="right" valign="top"><a class="el" href="class_qwt_polar_plot.html">QwtPolarPlot</a> *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_polar_canvas.html#a2f3dc31a8c28390e3a7ec13cab60250e">plot</a> ()</td></tr>
<tr class="separator:a2f3dc31a8c28390e3a7ec13cab60250e"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a1beed9ad6999fa4322df146357ebdb09"><td class="memItemLeft" align="right" valign="top">const <a class="el" href="class_qwt_polar_plot.html">QwtPolarPlot</a> *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_polar_canvas.html#a1beed9ad6999fa4322df146357ebdb09">plot</a> () const</td></tr>
<tr class="separator:a1beed9ad6999fa4322df146357ebdb09"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ae7010120b9f6905bd31f748775c80b6c"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_polar_canvas.html#ae7010120b9f6905bd31f748775c80b6c">setPaintAttribute</a> (<a class="el" href="class_qwt_polar_canvas.html#a371f88face8daaac6cd556e5f7596613">PaintAttribute</a>, bool on=true)</td></tr>
<tr class="memdesc:ae7010120b9f6905bd31f748775c80b6c"><td class="mdescLeft">&#160;</td><td class="mdescRight">Changing the paint attributes. <a href="class_qwt_polar_canvas.html#ae7010120b9f6905bd31f748775c80b6c">More...</a><br /></td></tr>
<tr class="separator:ae7010120b9f6905bd31f748775c80b6c"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a9834b8341d95b4435baf7774ca390328"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_polar_canvas.html#a9834b8341d95b4435baf7774ca390328">testPaintAttribute</a> (<a class="el" href="class_qwt_polar_canvas.html#a371f88face8daaac6cd556e5f7596613">PaintAttribute</a>) const</td></tr>
<tr class="separator:a9834b8341d95b4435baf7774ca390328"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ad54cdb87c053882b5567753d7dfa6072"><td class="memItemLeft" align="right" valign="top">const QPixmap *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_polar_canvas.html#ad54cdb87c053882b5567753d7dfa6072">backingStore</a> () const</td></tr>
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<tr class="memitem:a4afef808e10242a83a26f4b856aa4cef"><td class="memItemLeft" align="right" valign="top"><a id="a4afef808e10242a83a26f4b856aa4cef"></a>
void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_polar_canvas.html#a4afef808e10242a83a26f4b856aa4cef">invalidateBackingStore</a> ()</td></tr>
<tr class="memdesc:a4afef808e10242a83a26f4b856aa4cef"><td class="mdescLeft">&#160;</td><td class="mdescRight">Invalidate the internal backing store. <br /></td></tr>
<tr class="separator:a4afef808e10242a83a26f4b856aa4cef"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a59b8ed7fb1726bd82b60a0298a46f076"><td class="memItemLeft" align="right" valign="top"><a class="el" href="class_qwt_point_polar.html">QwtPointPolar</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_polar_canvas.html#a59b8ed7fb1726bd82b60a0298a46f076">invTransform</a> (const QPoint &amp;) const</td></tr>
<tr class="separator:a59b8ed7fb1726bd82b60a0298a46f076"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a5a74140354315002c9560bee0f3591d8"><td class="memItemLeft" align="right" valign="top">QPoint&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_polar_canvas.html#a5a74140354315002c9560bee0f3591d8">transform</a> (const <a class="el" href="class_qwt_point_polar.html">QwtPointPolar</a> &amp;) 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>
<tr class="memitem:a6ec2cf0f674a6aa0d5478de546de6f84"><td class="memItemLeft" align="right" valign="top">virtual void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_polar_canvas.html#a6ec2cf0f674a6aa0d5478de546de6f84">paintEvent</a> (QPaintEvent *) override</td></tr>
<tr class="separator:a6ec2cf0f674a6aa0d5478de546de6f84"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ab61788d26953d8e8be220379e8b74f26"><td class="memItemLeft" align="right" valign="top">virtual void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_polar_canvas.html#ab61788d26953d8e8be220379e8b74f26">resizeEvent</a> (QResizeEvent *) override</td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>Canvas of a <a class="el" href="class_qwt_polar_plot.html" title="A plotting widget, displaying a polar coordinate system.">QwtPolarPlot</a>. </p>
<p>The canvas is the widget, where all polar items are painted to.</p>
<dl class="section note"><dt>Note</dt><dd>In opposite to <a class="el" href="class_qwt_plot.html" title="A 2-D plotting widget.">QwtPlot</a> all axes are painted on the canvas. </dd></dl>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="class_qwt_polar_plot.html" title="A plotting widget, displaying a polar coordinate system.">QwtPolarPlot</a> </dd></dl>
<p class="definition">Definition at line <a class="el" href="qwt__polar__canvas_8h_source.html#l00027">27</a> of file <a class="el" href="qwt__polar__canvas_8h_source.html">qwt_polar_canvas.h</a>.</p>
</div><h2 class="groupheader">Member Typedef Documentation</h2>
<a id="a1fe73f1cc6086c16dbbce571db807a6a"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a1fe73f1cc6086c16dbbce571db807a6a">&#9670;&nbsp;</a></span>PaintAttributes</h2>
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<td class="memname">typedef QFlags&lt;<a class="el" href="class_qwt_polar_canvas.html#a371f88face8daaac6cd556e5f7596613">PaintAttribute</a> &gt; <a class="el" href="class_qwt_polar_canvas.html#a1fe73f1cc6086c16dbbce571db807a6a">QwtPolarCanvas::PaintAttributes</a></td>
</tr>
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</div><div class="memdoc">
<p>An ORed combination of <a class="el" href="class_qwt_polar_canvas.html#a371f88face8daaac6cd556e5f7596613">PaintAttribute</a> values. </p>
<p class="definition">Definition at line <a class="el" href="qwt__polar__canvas_8h_source.html#l00050">50</a> of file <a class="el" href="qwt__polar__canvas_8h_source.html">qwt_polar_canvas.h</a>.</p>
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<h2 class="groupheader">Member Enumeration Documentation</h2>
<a id="a371f88face8daaac6cd556e5f7596613"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a371f88face8daaac6cd556e5f7596613">&#9670;&nbsp;</a></span>PaintAttribute</h2>
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<div class="memproto">
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<td class="memname">enum <a class="el" href="class_qwt_polar_canvas.html#a371f88face8daaac6cd556e5f7596613">QwtPolarCanvas::PaintAttribute</a></td>
</tr>
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<p>Paint attributes. </p>
<p>The default setting enables BackingStore</p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="class_qwt_polar_canvas.html#ae7010120b9f6905bd31f748775c80b6c" title="Changing the paint attributes.">setPaintAttribute()</a>, <a class="el" href="class_qwt_polar_canvas.html#a9834b8341d95b4435baf7774ca390328">testPaintAttribute()</a>, <a class="el" href="class_qwt_polar_canvas.html#ad54cdb87c053882b5567753d7dfa6072">backingStore()</a> </dd></dl>
<table class="fieldtable">
<tr><th colspan="2">Enumerator</th></tr><tr><td class="fieldname"><a id="a371f88face8daaac6cd556e5f7596613ab8c07aaa7ba2c8833fd4d0cfd9955829"></a>BackingStore&#160;</td><td class="fielddoc"><p>Paint double buffered and reuse the content of the pixmap buffer for some spontaneous repaints that happen when a plot gets unhidden, deiconified or changes the focus. </p>
</td></tr>
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<p class="definition">Definition at line <a class="el" href="qwt__polar__canvas_8h_source.html#l00040">40</a> of file <a class="el" href="qwt__polar__canvas_8h_source.html">qwt_polar_canvas.h</a>.</p>
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<h2 class="groupheader">Member Function Documentation</h2>
<a id="ad54cdb87c053882b5567753d7dfa6072"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ad54cdb87c053882b5567753d7dfa6072">&#9670;&nbsp;</a></span>backingStore()</h2>
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<td class="memname">const QPixmap * QwtPolarCanvas::backingStore </td>
<td>(</td>
<td class="paramname"></td><td>)</td>
<td> const</td>
</tr>
</table>
</div><div class="memdoc">
<dl class="section return"><dt>Returns</dt><dd>Backing store, might be null </dd></dl>
<p class="definition">Definition at line <a class="el" href="qwt__polar__canvas_8cpp_source.html#l00170">170</a> of file <a class="el" href="qwt__polar__canvas_8cpp_source.html">qwt_polar_canvas.cpp</a>.</p>
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<a id="a59b8ed7fb1726bd82b60a0298a46f076"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a59b8ed7fb1726bd82b60a0298a46f076">&#9670;&nbsp;</a></span>invTransform()</h2>
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<td class="memname"><a class="el" href="class_qwt_point_polar.html">QwtPointPolar</a> QwtPolarCanvas::invTransform </td>
<td>(</td>
<td class="paramtype">const QPoint &amp;&#160;</td>
<td class="paramname"><em>pos</em></td><td>)</td>
<td> const</td>
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</div><div class="memdoc">
<p>Translate a point from widget into plot coordinates</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">pos</td><td>Point in widget coordinates of the plot canvas </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>Point in plot coordinates</dd></dl>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="class_qwt_polar_canvas.html#a5a74140354315002c9560bee0f3591d8">transform()</a> </dd></dl>
<p class="definition">Definition at line <a class="el" href="qwt__polar__canvas_8cpp_source.html#l00267">267</a> of file <a class="el" href="qwt__polar__canvas_8cpp_source.html">qwt_polar_canvas.cpp</a>.</p>
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<a id="a6ec2cf0f674a6aa0d5478de546de6f84"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a6ec2cf0f674a6aa0d5478de546de6f84">&#9670;&nbsp;</a></span>paintEvent()</h2>
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<td class="memname">void QwtPolarCanvas::paintEvent </td>
<td>(</td>
<td class="paramtype">QPaintEvent *&#160;</td>
<td class="paramname"><em>event</em></td><td>)</td>
<td></td>
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</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">override</span><span class="mlabel">protected</span><span class="mlabel">virtual</span></span> </td>
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<p>Paint event </p><dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">event</td><td>Paint event </td></tr>
</table>
</dd>
</dl>
<p class="definition">Definition at line <a class="el" href="qwt__polar__canvas_8cpp_source.html#l00186">186</a> of file <a class="el" href="qwt__polar__canvas_8cpp_source.html">qwt_polar_canvas.cpp</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a2f3dc31a8c28390e3a7ec13cab60250e">&#9670;&nbsp;</a></span>plot() <span class="overload">[1/2]</span></h2>
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<td class="memname"><a class="el" href="class_qwt_polar_plot.html">QwtPolarPlot</a> * QwtPolarCanvas::plot </td>
<td>(</td>
<td class="paramname"></td><td>)</td>
<td></td>
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<dl class="section return"><dt>Returns</dt><dd>Parent plot widget </dd></dl>
<p class="definition">Definition at line <a class="el" href="qwt__polar__canvas_8cpp_source.html#l00097">97</a> of file <a class="el" href="qwt__polar__canvas_8cpp_source.html">qwt_polar_canvas.cpp</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a1beed9ad6999fa4322df146357ebdb09">&#9670;&nbsp;</a></span>plot() <span class="overload">[2/2]</span></h2>
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<td class="memname">const <a class="el" href="class_qwt_polar_plot.html">QwtPolarPlot</a> * QwtPolarCanvas::plot </td>
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<dl class="section return"><dt>Returns</dt><dd>Parent plot widget </dd></dl>
<p class="definition">Definition at line <a class="el" href="qwt__polar__canvas_8cpp_source.html#l00103">103</a> of file <a class="el" href="qwt__polar__canvas_8cpp_source.html">qwt_polar_canvas.cpp</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#ab61788d26953d8e8be220379e8b74f26">&#9670;&nbsp;</a></span>resizeEvent()</h2>
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<td class="memname">void QwtPolarCanvas::resizeEvent </td>
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<td class="paramtype">QResizeEvent *&#160;</td>
<td class="paramname"><em>event</em></td><td>)</td>
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<span class="mlabels"><span class="mlabel">override</span><span class="mlabel">protected</span><span class="mlabel">virtual</span></span> </td>
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<p>Resize event </p><dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramname">event</td><td>Resize event </td></tr>
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<p class="definition">Definition at line <a class="el" href="qwt__polar__canvas_8cpp_source.html#l00251">251</a> of file <a class="el" href="qwt__polar__canvas_8cpp_source.html">qwt_polar_canvas.cpp</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#ae7010120b9f6905bd31f748775c80b6c">&#9670;&nbsp;</a></span>setPaintAttribute()</h2>
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<td class="memname">void QwtPolarCanvas::setPaintAttribute </td>
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<td class="paramtype"><a class="el" href="class_qwt_polar_canvas.html#a371f88face8daaac6cd556e5f7596613">PaintAttribute</a>&#160;</td>
<td class="paramname"><em>attribute</em>, </td>
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<td class="paramtype">bool&#160;</td>
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<p>Changing the paint attributes. </p>
<dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramname">attribute</td><td>Paint attribute </td></tr>
<tr><td class="paramname">on</td><td>On/Off</td></tr>
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<p>The default setting enables BackingStore</p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="class_qwt_polar_canvas.html#a9834b8341d95b4435baf7774ca390328">testPaintAttribute()</a>, paintCache() </dd></dl>
<p class="definition">Definition at line <a class="el" href="qwt__polar__canvas_8cpp_source.html#l00118">118</a> of file <a class="el" href="qwt__polar__canvas_8cpp_source.html">qwt_polar_canvas.cpp</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a9834b8341d95b4435baf7774ca390328">&#9670;&nbsp;</a></span>testPaintAttribute()</h2>
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<td class="memname">bool QwtPolarCanvas::testPaintAttribute </td>
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<td class="paramtype"><a class="el" href="class_qwt_polar_canvas.html#a371f88face8daaac6cd556e5f7596613">PaintAttribute</a>&#160;</td>
<td class="paramname"><em>attribute</em></td><td>)</td>
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<p>Test whether a paint attribute is enabled</p>
<dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramname">attribute</td><td>Paint attribute </td></tr>
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<dl class="section return"><dt>Returns</dt><dd>true if the attribute is enabled </dd></dl>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="class_qwt_polar_canvas.html#ae7010120b9f6905bd31f748775c80b6c" title="Changing the paint attributes.">setPaintAttribute()</a> </dd></dl>
<p class="definition">Definition at line <a class="el" href="qwt__polar__canvas_8cpp_source.html#l00164">164</a> of file <a class="el" href="qwt__polar__canvas_8cpp_source.html">qwt_polar_canvas.cpp</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a5a74140354315002c9560bee0f3591d8">&#9670;&nbsp;</a></span>transform()</h2>
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<td class="memname">QPoint QwtPolarCanvas::transform </td>
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<td class="paramtype">const <a class="el" href="class_qwt_point_polar.html">QwtPointPolar</a> &amp;&#160;</td>
<td class="paramname"><em>polarPos</em></td><td>)</td>
<td> const</td>
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<p>Translate a point from plot into widget coordinates</p>
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<tr><td class="paramname">polarPos</td><td>Point in plot coordinates </td></tr>
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<dl class="section return"><dt>Returns</dt><dd>Point in widget coordinates </dd></dl>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="class_qwt_polar_canvas.html#a5a74140354315002c9560bee0f3591d8">transform()</a> </dd></dl>
<p class="definition">Definition at line <a class="el" href="qwt__polar__canvas_8cpp_source.html#l00310">310</a> of file <a class="el" href="qwt__polar__canvas_8cpp_source.html">qwt_polar_canvas.cpp</a>.</p>
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