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<div class="title">qwt_dial.h</div> </div>
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">/* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************</span></div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment"> * Qwt Widget Library</span></div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> * Copyright (C) 1997 Josef Wilgen</span></div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> * Copyright (C) 2002 Uwe Rathmann</span></div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> *</span></div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> * This library is free software; you can redistribute it and/or</span></div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> * modify it under the terms of the Qwt License, Version 1.0</span></div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> *****************************************************************************/</span></div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span> </div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="preprocessor">#ifndef QWT_DIAL_H</span></div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="preprocessor">#define QWT_DIAL_H 1</span></div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span> </div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="preprocessor">#include "qwt_global.h"</span></div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="preprocessor">#include "qwt_abstract_slider.h"</span></div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="preprocessor">#include "qwt_abstract_scale_draw.h"</span></div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="preprocessor">#include <qframe.h></span></div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="preprocessor">#include <qpalette.h></span></div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> </div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="keyword">class </span><a class="code" href="class_qwt_dial_needle.html">QwtDialNeedle</a>;</div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="keyword">class </span><a class="code" href="class_qwt_round_scale_draw.html">QwtRoundScaleDraw</a>;</div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span> </div><div class="line"><a name="l00049"></a><span class="lineno"><a class="line" href="class_qwt_dial.html"> 49</a></span> <span class="keyword">class </span>QWT_EXPORT <a class="code" href="class_qwt_dial.html">QwtDial</a>: <span class="keyword">public</span> <a class="code" href="class_qwt_abstract_slider.html">QwtAbstractSlider</a></div><div class="line"><a name="l00050"></a><span class="lineno"> 50</span> {</div><div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  Q_OBJECT</div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span> </div><div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  Q_ENUMS( <a class="code" href="class_qwt_dial.html#a7472124cb120352e8538430ab48c2386">Shadow</a> <a class="code" href="class_qwt_dial.html#a7376f53193014b91643350e6e6bc85ad">Mode</a> Direction )</div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span> </div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  Q_PROPERTY( <span class="keywordtype">int</span> lineWidth READ lineWidth WRITE setLineWidth )</div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  Q_PROPERTY( <a class="code" href="class_qwt_dial.html#a7472124cb120352e8538430ab48c2386">Shadow</a> frameShadow READ frameShadow WRITE setFrameShadow )</div><div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  Q_PROPERTY( <a class="code" href="class_qwt_dial.html#a7376f53193014b91643350e6e6bc85ad">Mode</a> mode READ mode WRITE setMode )</div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  Q_PROPERTY( <span class="keywordtype">double</span> origin READ origin WRITE setOrigin )</div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  Q_PROPERTY( <span class="keywordtype">double</span> minScaleArc READ minScaleArc WRITE setMinScaleArc )</div><div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  Q_PROPERTY( <span class="keywordtype">double</span> maxScaleArc READ maxScaleArc WRITE setMaxScaleArc )</div><div class="line"><a name="l00061"></a><span class="lineno"> 61</span> </div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span> <span class="keyword">public</span>:</div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span> </div><div class="line"><a name="l00072"></a><span class="lineno"><a class="line" href="class_qwt_dial.html#a7472124cb120352e8538430ab48c2386"> 72</a></span>  <span class="keyword">enum</span> <a class="code" href="class_qwt_dial.html#a7472124cb120352e8538430ab48c2386">Shadow</a></div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  {</div><div class="line"><a name="l00075"></a><span class="lineno"><a class="line" href="class_qwt_dial.html#a7472124cb120352e8538430ab48c2386a8d0cdae56d44bcd25574d7e432498d86"> 75</a></span>  Plain = QFrame::Plain,</div><div class="line"><a name="l00076"></a><span class="lineno"> 76</span> </div><div class="line"><a name="l00078"></a><span class="lineno"><a class="line" href="class_qwt_dial.html#a7472124cb120352e8538430ab48c2386a4054b8890d1f837387762b4a12157847"> 78</a></span>  Raised = QFrame::Raised,</div><div class="line"><a name="l00079"></a><span class="lineno"> 79</span> </div><div class="line"><a name="l00081"></a><span class="lineno"><a class="line" href="class_qwt_dial.html#a7472124cb120352e8538430ab48c2386ae1388e8ff1a378e22cd082fcb46aa685"> 81</a></span>  Sunken = QFrame::Sunken</div><div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  };</div><div class="line"><a name="l00083"></a><span class="lineno"> 83</span> </div><div class="line"><a name="l00085"></a><span class="lineno"><a class="line" href="class_qwt_dial.html#a7376f53193014b91643350e6e6bc85ad"> 85</a></span>  <span class="keyword">enum</span> <a class="code" href="class_qwt_dial.html#a7376f53193014b91643350e6e6bc85ad">Mode</a></div><div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  {</div><div class="line"><a name="l00088"></a><span class="lineno"><a class="line" href="class_qwt_dial.html#a7376f53193014b91643350e6e6bc85adacc23db2e06c9098f8cfbd0181184054a"> 88</a></span>  <a class="code" href="class_qwt_dial.html#a7376f53193014b91643350e6e6bc85adacc23db2e06c9098f8cfbd0181184054a">RotateNeedle</a>,</div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span> </div><div class="line"><a name="l00091"></a><span class="lineno"><a class="line" href="class_qwt_dial.html#a7376f53193014b91643350e6e6bc85ada95a22f59ec832d22f011a9421f528c41"> 91</a></span>  RotateScale</div><div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  };</div><div class="line"><a name="l00093"></a><span class="lineno"> 93</span> </div><div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  <span class="keyword">explicit</span> <a class="code" href="class_qwt_dial.html">QwtDial</a>( QWidget *parent = NULL );</div><div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  <span class="keyword">virtual</span> ~<a class="code" href="class_qwt_dial.html">QwtDial</a>();</div><div class="line"><a name="l00096"></a><span class="lineno"> 96</span> </div><div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  <span class="keywordtype">void</span> setFrameShadow( <a class="code" href="class_qwt_dial.html#a7472124cb120352e8538430ab48c2386">Shadow</a> );</div><div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  <a class="code" href="class_qwt_dial.html#a7472124cb120352e8538430ab48c2386">Shadow</a> frameShadow() <span class="keyword">const</span>;</div><div class="line"><a name="l00099"></a><span class="lineno"> 99</span> </div><div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  <span class="keywordtype">void</span> setLineWidth( <span class="keywordtype">int</span> );</div><div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  <span class="keywordtype">int</span> lineWidth() <span class="keyword">const</span>;</div><div class="line"><a name="l00102"></a><span class="lineno"> 102</span> </div><div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  <span class="keywordtype">void</span> setMode( <a class="code" href="class_qwt_dial.html#a7376f53193014b91643350e6e6bc85ad">Mode</a> );</div><div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  <a class="code" href="class_qwt_dial.html#a7376f53193014b91643350e6e6bc85ad">Mode</a> mode() <span class="keyword">const</span>;</div><div class="line"><a name="l00105"></a><span class="lineno"> 105</span> </div><div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  <span class="keywordtype">void</span> setScaleArc( <span class="keywordtype">double</span> min, <span class="keywordtype">double</span> max );</div><div class="line"><a name="l00107"></a><span class="lineno"> 107</span> </div><div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  <span class="keywordtype">void</span> setMinScaleArc( <span class="keywordtype">double</span> min );</div><div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  <span class="keywordtype">double</span> minScaleArc() <span class="keyword">const</span>;</div><div class="line"><a name="l00110"></a><span class="lineno"> 110</span> </div><div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  <span class="keywordtype">void</span> setMaxScaleArc( <span class="keywordtype">double</span> min );</div><div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  <span class="keywordtype">double</span> maxScaleArc() <span class="keyword">const</span>;</div><div class="line"><a name="l00113"></a><span class="lineno"> 113</span> </div><div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  <span class="keyword">virtual</span> <span class="keywordtype">void</span> setOrigin( <span class="keywordtype">double</span> );</div><div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  <span class="keywordtype">double</span> origin() <span class="keyword">const</span>;</div><div class="line"><a name="l00116"></a><span class="lineno"> 116</span> </div><div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  <span class="keywordtype">void</span> setNeedle( <a class="code" href="class_qwt_dial_needle.html">QwtDialNeedle</a> * );</div><div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  <span class="keyword">const</span> <a class="code" href="class_qwt_dial_needle.html">QwtDialNeedle</a> *needle() <span class="keyword">const</span>;</div><div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  <a class="code" href="class_qwt_dial_needle.html">QwtDialNeedle</a> *needle();</div><div class="line"><a name="l00120"></a><span class="lineno"> 120</span> </div><div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  QRect boundingRect() <span class="keyword">const</span>;</div><div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  QRect innerRect() <span class="keyword">const</span>;</div><div class="line"><a name="l00123"></a><span class="lineno"> 123</span> </div><div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  <span class="keyword">virtual</span> QRect scaleInnerRect() <span class="keyword">const</span>;</div><div class="line"><a name="l00125"></a><span class="lineno"> 125</span> </div><div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  <span class="keyword">virtual</span> QSize sizeHint() <span class="keyword">const</span>;</div><div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  <span class="keyword">virtual</span> QSize minimumSizeHint() <span class="keyword">const</span>;</div><div class="line"><a name="l00128"></a><span class="lineno"> 128</span> </div><div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  <span class="keywordtype">void</span> setScaleDraw( <a class="code" href="class_qwt_round_scale_draw.html">QwtRoundScaleDraw</a> * );</div><div class="line"><a name="l00130"></a><span class="lineno"> 130</span> </div><div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  <a class="code" href="class_qwt_round_scale_draw.html">QwtRoundScaleDraw</a> *scaleDraw();</div><div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  <span class="keyword">const</span> <a class="code" href="class_qwt_round_scale_draw.html">QwtRoundScaleDraw</a> *scaleDraw() <span class="keyword">const</span>;</div><div class="line"><a name="l00133"></a><span class="lineno"> 133</span> </div><div class="line"><a name="l00134"></a><span class="lineno"> 134</span> <span class="keyword">protected</span>:</div><div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="class_qwt_abstract_slider.html#a7050c9ce667176e6de4c6357b5acd493">wheelEvent</a>( QWheelEvent * );</div><div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  <span class="keyword">virtual</span> <span class="keywordtype">void</span> paintEvent( QPaintEvent * );</div><div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  <span class="keyword">virtual</span> <span class="keywordtype">void</span> changeEvent( QEvent * );</div><div class="line"><a name="l00138"></a><span class="lineno"> 138</span> </div><div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  <span class="keyword">virtual</span> <span class="keywordtype">void</span> drawFrame( QPainter *p );</div><div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  <span class="keyword">virtual</span> <span class="keywordtype">void</span> drawContents( QPainter * ) <span class="keyword">const</span>;</div><div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  <span class="keyword">virtual</span> <span class="keywordtype">void</span> drawFocusIndicator( QPainter * ) <span class="keyword">const</span>;</div><div class="line"><a name="l00142"></a><span class="lineno"> 142</span> </div><div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  <span class="keywordtype">void</span> invalidateCache();</div><div class="line"><a name="l00144"></a><span class="lineno"> 144</span> </div><div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  <span class="keyword">virtual</span> <span class="keywordtype">void</span> drawScale( QPainter *, </div><div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  <span class="keyword">const</span> QPointF &center, <span class="keywordtype">double</span> radius ) <span class="keyword">const</span>;</div><div class="line"><a name="l00147"></a><span class="lineno"> 147</span> </div><div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  <span class="keyword">virtual</span> <span class="keywordtype">void</span> drawScaleContents( QPainter *painter, </div><div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  <span class="keyword">const</span> QPointF &center, <span class="keywordtype">double</span> radius ) <span class="keyword">const</span>;</div><div class="line"><a name="l00150"></a><span class="lineno"> 150</span> </div><div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  <span class="keyword">virtual</span> <span class="keywordtype">void</span> drawNeedle( QPainter *, <span class="keyword">const</span> QPointF &,</div><div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  <span class="keywordtype">double</span> radius, <span class="keywordtype">double</span> direction, QPalette::ColorGroup ) <span class="keyword">const</span>;</div><div class="line"><a name="l00153"></a><span class="lineno"> 153</span> </div><div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  <span class="keyword">virtual</span> <span class="keywordtype">double</span> <a class="code" href="class_qwt_abstract_slider.html#a3e7671e00a31e7b0ba4ef4a2c325125a">scrolledTo</a>( <span class="keyword">const</span> QPoint & ) <span class="keyword">const</span>;</div><div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  <span class="keyword">virtual</span> <span class="keywordtype">bool</span> <a class="code" href="class_qwt_abstract_slider.html#a3f4cae5b7a4a0a461fb04eeb0a39a5c2">isScrollPosition</a>( <span class="keyword">const</span> QPoint & ) <span class="keyword">const</span>;</div><div class="line"><a name="l00156"></a><span class="lineno"> 156</span> </div><div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="class_qwt_abstract_slider.html#a36ac20a000d40b2fddf5c144d1133f77">sliderChange</a>();</div><div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="class_qwt_abstract_slider.html#a491fe8bbe771fb51bf35d429d4b92e05">scaleChange</a>();</div><div class="line"><a name="l00159"></a><span class="lineno"> 159</span> </div><div class="line"><a name="l00160"></a><span class="lineno"> 160</span> <span class="keyword">private</span>:</div><div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  <span class="keywordtype">void</span> setAngleRange( <span class="keywordtype">double</span> angle, <span class="keywordtype">double</span> span );</div><div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  <span class="keywordtype">void</span> drawNeedle( QPainter * ) <span class="keyword">const</span>;</div><div class="line"><a name="l00163"></a><span class="lineno"> 163</span> </div><div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  <span class="keyword">class </span>PrivateData;</div><div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  PrivateData *d_data;</div><div class="line"><a name="l00166"></a><span class="lineno"> 166</span> };</div><div class="line"><a name="l00167"></a><span class="lineno"> 167</span> </div><div class="line"><a name="l00168"></a><span class="lineno"> 168</span> <span class="preprocessor">#endif</span></div><div class="ttc" id="class_qwt_dial_html_a7472124cb120352e8538430ab48c2386"><div class="ttname"><a href="class_qwt_dial.html#a7472124cb120352e8538430ab48c2386">QwtDial::Shadow</a></div><div class="ttdeci">Shadow</div><div class="ttdoc">Frame shadow. </div><div class="ttdef"><b>Definition:</b> qwt_dial.h:72</div></div>
<div class="ttc" id="class_qwt_round_scale_draw_html"><div class="ttname"><a href="class_qwt_round_scale_draw.html">QwtRoundScaleDraw</a></div><div class="ttdoc">A class for drawing round scales. </div><div class="ttdef"><b>Definition:</b> qwt_round_scale_draw.h:30</div></div>
<div class="ttc" id="class_qwt_abstract_slider_html_a3e7671e00a31e7b0ba4ef4a2c325125a"><div class="ttname"><a href="class_qwt_abstract_slider.html#a3e7671e00a31e7b0ba4ef4a2c325125a">QwtAbstractSlider::scrolledTo</a></div><div class="ttdeci">virtual double scrolledTo(const QPoint &pos) const =0</div><div class="ttdoc">Determine the value for a new position of the movable part of the slider. </div></div>
<div class="ttc" id="class_qwt_abstract_slider_html_a3f4cae5b7a4a0a461fb04eeb0a39a5c2"><div class="ttname"><a href="class_qwt_abstract_slider.html#a3f4cae5b7a4a0a461fb04eeb0a39a5c2">QwtAbstractSlider::isScrollPosition</a></div><div class="ttdeci">virtual bool isScrollPosition(const QPoint &pos) const =0</div><div class="ttdoc">Determine what to do when the user presses a mouse button. </div></div>
<div class="ttc" id="class_qwt_dial_html"><div class="ttname"><a href="class_qwt_dial.html">QwtDial</a></div><div class="ttdoc">QwtDial class provides a rounded range control. </div><div class="ttdef"><b>Definition:</b> qwt_dial.h:49</div></div>
<div class="ttc" id="class_qwt_abstract_slider_html_a7050c9ce667176e6de4c6357b5acd493"><div class="ttname"><a href="class_qwt_abstract_slider.html#a7050c9ce667176e6de4c6357b5acd493">QwtAbstractSlider::wheelEvent</a></div><div class="ttdeci">virtual void wheelEvent(QWheelEvent *)</div><div class="ttdef"><b>Definition:</b> qwt_abstract_slider.cpp:299</div></div>
<div class="ttc" id="class_qwt_abstract_slider_html_a36ac20a000d40b2fddf5c144d1133f77"><div class="ttname"><a href="class_qwt_abstract_slider.html#a36ac20a000d40b2fddf5c144d1133f77">QwtAbstractSlider::sliderChange</a></div><div class="ttdeci">virtual void sliderChange()</div><div class="ttdoc">Calling update() </div><div class="ttdef"><b>Definition:</b> qwt_abstract_slider.cpp:819</div></div>
<div class="ttc" id="class_qwt_dial_html_a7376f53193014b91643350e6e6bc85ad"><div class="ttname"><a href="class_qwt_dial.html#a7376f53193014b91643350e6e6bc85ad">QwtDial::Mode</a></div><div class="ttdeci">Mode</div><div class="ttdoc">Mode controlling whether the needle or the scale is rotating. </div><div class="ttdef"><b>Definition:</b> qwt_dial.h:85</div></div>
<div class="ttc" id="class_qwt_dial_html_a7376f53193014b91643350e6e6bc85adacc23db2e06c9098f8cfbd0181184054a"><div class="ttname"><a href="class_qwt_dial.html#a7376f53193014b91643350e6e6bc85adacc23db2e06c9098f8cfbd0181184054a">QwtDial::RotateNeedle</a></div><div class="ttdoc">The needle is rotating. </div><div class="ttdef"><b>Definition:</b> qwt_dial.h:88</div></div>
<div class="ttc" id="class_qwt_abstract_slider_html_a491fe8bbe771fb51bf35d429d4b92e05"><div class="ttname"><a href="class_qwt_abstract_slider.html#a491fe8bbe771fb51bf35d429d4b92e05">QwtAbstractSlider::scaleChange</a></div><div class="ttdeci">virtual void scaleChange()</div><div class="ttdef"><b>Definition:</b> qwt_abstract_slider.cpp:801</div></div>
<div class="ttc" id="class_qwt_abstract_slider_html"><div class="ttname"><a href="class_qwt_abstract_slider.html">QwtAbstractSlider</a></div><div class="ttdoc">An abstract base class for slider widgets with a scale. </div><div class="ttdef"><b>Definition:</b> qwt_abstract_slider.h:32</div></div>
<div class="ttc" id="class_qwt_dial_needle_html"><div class="ttname"><a href="class_qwt_dial_needle.html">QwtDialNeedle</a></div><div class="ttdoc">Base class for needles that can be used in a QwtDial. </div><div class="ttdef"><b>Definition:</b> qwt_dial_needle.h:28</div></div>
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