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<p>An indicator for the wind direction.
 <a href="class_qwt_compass_wind_arrow.html#details">More...</a></p>

<p><code>#include &lt;<a class="el" href="qwt__dial__needle_8h_source.html">qwt_dial_needle.h</a>&gt;</code></p>
<div class="dynheader">
Inheritance diagram for QwtCompassWindArrow:</div>
<div class="dyncontent">
<div class="center"><img src="class_qwt_compass_wind_arrow__inherit__graph.png" border="0" usemap="#_qwt_compass_wind_arrow_inherit__map" alt="Inheritance graph"/></div>
<map name="_qwt_compass_wind_arrow_inherit__map" id="_qwt_compass_wind_arrow_inherit__map">
<area shape="rect" id="node2" href="class_qwt_dial_needle.html" title="Base class for needles that can be used in a QwtDial." alt="" coords="31,5,137,32"/></map>
<center><span class="legend">[<a href="graph_legend.html">legend</a>]</span></center></div>
<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:a55f11e28c9d87c0fb7c306ccd174f2a8"><td class="memItemLeft" align="right" valign="top">enum &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_compass_wind_arrow.html#a55f11e28c9d87c0fb7c306ccd174f2a8">Style</a> { <a class="el" href="class_qwt_compass_wind_arrow.html#a55f11e28c9d87c0fb7c306ccd174f2a8a62b689f03b4e974660ce1241942b09fc">Style1</a>,
<a class="el" href="class_qwt_compass_wind_arrow.html#a55f11e28c9d87c0fb7c306ccd174f2a8a44a462b3f0fa85bf3fa8dc421484e529">Style2</a>
 }</td></tr>
<tr class="memdesc:a55f11e28c9d87c0fb7c306ccd174f2a8"><td class="mdescLeft">&#160;</td><td class="mdescRight">Style of the arrow.  <a href="class_qwt_compass_wind_arrow.html#a55f11e28c9d87c0fb7c306ccd174f2a8">More...</a><br/></td></tr>
<tr class="separator:a55f11e28c9d87c0fb7c306ccd174f2a8"><td class="memSeparator" colspan="2">&#160;</td></tr>
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a>
Public Member Functions</h2></td></tr>
<tr class="memitem:a1b5931f43dd7e72fc5a3e2c9b509769d"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_compass_wind_arrow.html#a1b5931f43dd7e72fc5a3e2c9b509769d">QwtCompassWindArrow</a> (<a class="el" href="class_qwt_compass_wind_arrow.html#a55f11e28c9d87c0fb7c306ccd174f2a8">Style</a>, const QColor &amp;light=Qt::white, const QColor &amp;dark=Qt::gray)</td></tr>
<tr class="separator:a1b5931f43dd7e72fc5a3e2c9b509769d"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="inherit_header pub_methods_class_qwt_dial_needle"><td colspan="2" onclick="javascript:toggleInherit('pub_methods_class_qwt_dial_needle')"><img src="closed.png" alt="-"/>&#160;Public Member Functions inherited from <a class="el" href="class_qwt_dial_needle.html">QwtDialNeedle</a></td></tr>
<tr class="memitem:aef3af79632ce784bc4d7332f6e269a1f inherit pub_methods_class_qwt_dial_needle"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="aef3af79632ce784bc4d7332f6e269a1f"></a>
&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_dial_needle.html#aef3af79632ce784bc4d7332f6e269a1f">QwtDialNeedle</a> ()</td></tr>
<tr class="memdesc:aef3af79632ce784bc4d7332f6e269a1f inherit pub_methods_class_qwt_dial_needle"><td class="mdescLeft">&#160;</td><td class="mdescRight">Constructor. <br/></td></tr>
<tr class="separator:aef3af79632ce784bc4d7332f6e269a1f inherit pub_methods_class_qwt_dial_needle"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ac23b2af4af50042967c8cea87b474247 inherit pub_methods_class_qwt_dial_needle"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="ac23b2af4af50042967c8cea87b474247"></a>
virtual&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_dial_needle.html#ac23b2af4af50042967c8cea87b474247">~QwtDialNeedle</a> ()</td></tr>
<tr class="memdesc:ac23b2af4af50042967c8cea87b474247 inherit pub_methods_class_qwt_dial_needle"><td class="mdescLeft">&#160;</td><td class="mdescRight">Destructor. <br/></td></tr>
<tr class="separator:ac23b2af4af50042967c8cea87b474247 inherit pub_methods_class_qwt_dial_needle"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ae850883a64501136bca64d6ea2d084b9 inherit pub_methods_class_qwt_dial_needle"><td class="memItemLeft" align="right" valign="top">virtual void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_dial_needle.html#ae850883a64501136bca64d6ea2d084b9">setPalette</a> (const QPalette &amp;)</td></tr>
<tr class="separator:ae850883a64501136bca64d6ea2d084b9 inherit pub_methods_class_qwt_dial_needle"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a8b3c915032389261e07cc983b433166c inherit pub_methods_class_qwt_dial_needle"><td class="memItemLeft" align="right" valign="top">const QPalette &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_dial_needle.html#a8b3c915032389261e07cc983b433166c">palette</a> () const </td></tr>
<tr class="separator:a8b3c915032389261e07cc983b433166c inherit pub_methods_class_qwt_dial_needle"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a425085086c4a8c7baff10b161616ee42 inherit pub_methods_class_qwt_dial_needle"><td class="memItemLeft" align="right" valign="top">virtual void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_dial_needle.html#a425085086c4a8c7baff10b161616ee42">draw</a> (QPainter *painter, const QPointF &amp;center, double length, double direction, QPalette::ColorGroup=QPalette::Active) const </td></tr>
<tr class="separator:a425085086c4a8c7baff10b161616ee42 inherit pub_methods_class_qwt_dial_needle"><td class="memSeparator" colspan="2">&#160;</td></tr>
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pro-methods"></a>
Protected Member Functions</h2></td></tr>
<tr class="memitem:a4e3b612f2de83ff416e34f62c1f0fd6c"><td class="memItemLeft" align="right" valign="top">virtual void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_compass_wind_arrow.html#a4e3b612f2de83ff416e34f62c1f0fd6c">drawNeedle</a> (QPainter *, double length, QPalette::ColorGroup) const </td></tr>
<tr class="separator:a4e3b612f2de83ff416e34f62c1f0fd6c"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="inherit_header pro_methods_class_qwt_dial_needle"><td colspan="2" onclick="javascript:toggleInherit('pro_methods_class_qwt_dial_needle')"><img src="closed.png" alt="-"/>&#160;Protected Member Functions inherited from <a class="el" href="class_qwt_dial_needle.html">QwtDialNeedle</a></td></tr>
<tr class="memitem:aaca9572717a1db10b1b6609571024688 inherit pro_methods_class_qwt_dial_needle"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="aaca9572717a1db10b1b6609571024688"></a>
virtual void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_dial_needle.html#aaca9572717a1db10b1b6609571024688">drawKnob</a> (QPainter *, double width, const QBrush &amp;, bool sunken) const </td></tr>
<tr class="memdesc:aaca9572717a1db10b1b6609571024688 inherit pro_methods_class_qwt_dial_needle"><td class="mdescLeft">&#160;</td><td class="mdescRight">Draw the knob. <br/></td></tr>
<tr class="separator:aaca9572717a1db10b1b6609571024688 inherit pro_methods_class_qwt_dial_needle"><td class="memSeparator" colspan="2">&#160;</td></tr>
</table>
<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>An indicator for the wind direction. </p>
<p><a class="el" href="class_qwt_compass_wind_arrow.html" title="An indicator for the wind direction.">QwtCompassWindArrow</a> shows the direction where the wind comes from.</p>
<ul>
<li>QPalette::Light<br/>
 Used for Style1, or the light half of Style2</li>
<li>QPalette::Dark<br/>
 Used for the dark half of Style2</li>
</ul>
<dl class="section see"><dt>See Also</dt><dd><a class="el" href="class_qwt_dial.html" title="QwtDial class provides a rounded range control.">QwtDial</a>, <a class="el" href="class_qwt_compass.html" title="A Compass Widget.">QwtCompass</a> </dd></dl>
</div><h2 class="groupheader">Member Enumeration Documentation</h2>
<a class="anchor" id="a55f11e28c9d87c0fb7c306ccd174f2a8"></a>
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<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">enum <a class="el" href="class_qwt_compass_wind_arrow.html#a55f11e28c9d87c0fb7c306ccd174f2a8">QwtCompassWindArrow::Style</a></td>
        </tr>
      </table>
</div><div class="memdoc">

<p>Style of the arrow. </p>
<table class="fieldtable">
<tr><th colspan="2">Enumerator</th></tr><tr><td class="fieldname"><em><a class="anchor" id="a55f11e28c9d87c0fb7c306ccd174f2a8a62b689f03b4e974660ce1241942b09fc"></a>Style1</em>&nbsp;</td><td class="fielddoc">
<p>A needle pointing to the center. </p>
</td></tr>
<tr><td class="fieldname"><em><a class="anchor" id="a55f11e28c9d87c0fb7c306ccd174f2a8a44a462b3f0fa85bf3fa8dc421484e529"></a>Style2</em>&nbsp;</td><td class="fielddoc">
<p>A needle pointing to the center. </p>
</td></tr>
</table>

</div>
</div>
<h2 class="groupheader">Constructor &amp; Destructor Documentation</h2>
<a class="anchor" id="a1b5931f43dd7e72fc5a3e2c9b509769d"></a>
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          <td class="memname">QwtCompassWindArrow::QwtCompassWindArrow </td>
          <td>(</td>
          <td class="paramtype"><a class="el" href="class_qwt_compass_wind_arrow.html#a55f11e28c9d87c0fb7c306ccd174f2a8">Style</a>&#160;</td>
          <td class="paramname"><em>style</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">const QColor &amp;&#160;</td>
          <td class="paramname"><em>light</em> = <code>Qt::white</code>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">const QColor &amp;&#160;</td>
          <td class="paramname"><em>dark</em> = <code>Qt::gray</code>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
</div><div class="memdoc">
<p>Constructor</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">style</td><td>Arrow style </td></tr>
    <tr><td class="paramname">light</td><td>Light color </td></tr>
    <tr><td class="paramname">dark</td><td>Dark color </td></tr>
  </table>
  </dd>
</dl>

</div>
</div>
<h2 class="groupheader">Member Function Documentation</h2>
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  <td class="mlabels-left">
      <table class="memname">
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          <td class="memname">void QwtCompassWindArrow::drawNeedle </td>
          <td>(</td>
          <td class="paramtype">QPainter *&#160;</td>
          <td class="paramname"><em>painter</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">double&#160;</td>
          <td class="paramname"><em>length</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">QPalette::ColorGroup&#160;</td>
          <td class="paramname"><em>colorGroup</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td> const</td>
        </tr>
      </table>
  </td>
  <td class="mlabels-right">
<span class="mlabels"><span class="mlabel">protected</span><span class="mlabel">virtual</span></span>  </td>
  </tr>
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</div><div class="memdoc">
<p>Draw the needle</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">painter</td><td>Painter </td></tr>
    <tr><td class="paramname">length</td><td>Length of the needle </td></tr>
    <tr><td class="paramname">colorGroup</td><td>Color group, used for painting </td></tr>
  </table>
  </dd>
</dl>

<p>Implements <a class="el" href="class_qwt_dial_needle.html#a1e4fee366fec1838edc18890d9957f2b">QwtDialNeedle</a>.</p>

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