class_qwt_knob.html
来自「QWT5.01用于Qt开发的二维图形库程序」· HTML 代码 · 共 856 行 · 第 1/3 页
HTML
856 行
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html><head><meta http-equiv="Content-Type" content="text/html;charset=iso-8859-1"><title>Qwt User's Guide: QwtKnob Class Reference</title><link href="doxygen.css" rel="stylesheet" type="text/css"><link href="tabs.css" rel="stylesheet" type="text/css"></head><body><!-- Generated by Doxygen 1.4.6 --><div class="tabs"> <ul> <li><a href="index.html"><span>Main Page</span></a></li> <li id="current"><a href="classes.html"><span>Classes</span></a></li> <li><a href="files.html"><span>Files</span></a></li> <li><a href="pages.html"><span>Related Pages</span></a></li> </ul></div><div class="tabs"> <ul> <li><a href="classes.html"><span>Alphabetical List</span></a></li> <li><a href="annotated.html"><span>Class List</span></a></li> <li><a href="hierarchy.html"><span>Class Hierarchy</span></a></li> <li><a href="functions.html"><span>Class Members</span></a></li> </ul></div><h1>QwtKnob Class Reference</h1><!-- doxytag: class="QwtKnob" --><!-- doxytag: inherits="QwtAbstractSlider,QwtAbstractScale" -->Inheritance diagram for QwtKnob:<p><center><img src="class_qwt_knob__inherit__graph.png" border="0" usemap="#_qwt_knob__inherit__map" alt="Inheritance graph"></center><map name="_qwt_knob__inherit__map"><area href="class_qwt_abstract_slider.html" shape="rect" coords="7,83,135,107" alt=""><area href="class_qwt_double_range.html" shape="rect" coords="8,8,133,32" alt=""><area href="class_qwt_abstract_scale.html" shape="rect" coords="159,83,287,107" alt=""></map><center><font size="2">[<a href="graph_legend.html">legend</a>]</font></center>Collaboration diagram for QwtKnob:<p><center><img src="class_qwt_knob__coll__graph.png" border="0" usemap="#_qwt_knob__coll__map" alt="Collaboration graph"></center><map name="_qwt_knob__coll__map"><area href="class_qwt_abstract_slider.html" shape="rect" coords="7,83,135,107" alt=""><area href="class_qwt_double_range.html" shape="rect" coords="8,8,133,32" alt=""><area href="class_qwt_abstract_scale.html" shape="rect" coords="159,83,287,107" alt=""></map><center><font size="2">[<a href="graph_legend.html">legend</a>]</font></center><a href="class_qwt_knob-members.html">List of all members.</a><hr><a name="_details"></a><h2>Detailed Description</h2>The Knob Widget. <p>The <a class="el" href="class_qwt_knob.html">QwtKnob</a> widget imitates look and behaviour of a volume knob on a radio. It contains a scale around the knob which is set up automatically or can be configured manually (see <a class="el" href="class_qwt_abstract_scale.html">QwtAbstractScale</a>). Automatic scrolling is enabled when the user presses a mouse button on the scale. For a description of signals, slots and other members, see <a class="el" href="class_qwt_abstract_slider.html">QwtAbstractSlider</a>.<p><div align="center"><img src="knob.png" alt="knob.png"></div> <dl compact><dt><b>See also:</b></dt><dd><a class="el" href="class_qwt_abstract_slider.html">QwtAbstractSlider</a> and <a class="el" href="class_qwt_abstract_scale.html">QwtAbstractScale</a> for the descriptions of the inherited members. </dd></dl><p><p>Definition at line <a class="el" href="qwt__knob_8h-source.html#l00034">34</a> of file <a class="el" href="qwt__knob_8h-source.html">qwt_knob.h</a>.<table border="0" cellpadding="0" cellspacing="0"><tr><td></td></tr><tr><td colspan="2"><br><h2>Public Types</h2></td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">enum </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_knob.html#a72613ae9e19a921beffaf8c99ab87f0">Symbol</a> { <br> <b>Line</b>, <br> <b>Dot</b><br> }</td></tr><tr><td colspan="2"><br><h2>Public Member Functions</h2></td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_knob.html#767e89f3d4875da7d2074050572e0556">QwtKnob</a> (QWidget *parent=NULL)</td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">virtual </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_knob.html#13f3e622b333c9918bc61844029f8a70">~QwtKnob</a> ()</td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_knob.html#58e2966b2ebe5631991f293ab61558f3">setKnobWidth</a> (int w)</td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_knob.html#a9470eed740c7175c7ccfc4406eb5fc2">knobWidth</a> () const </td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_knob.html#82c6a859d63833894a6e66f0fdbf8f05">setTotalAngle</a> (double angle)</td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">double </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_knob.html#804d957c14e08bd9b132985c892ab853">totalAngle</a> () const </td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_knob.html#2e0a17648602bab3b1aaabfc3ba19441">setBorderWidth</a> (int bw)</td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_knob.html#3e19de6a4762aeaf2b95266b20961574">borderWidth</a> () const </td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_knob.html#63421f4b0d0745608bb6c202b0492eaf">setSymbol</a> (<a class="el" href="class_qwt_knob.html#a72613ae9e19a921beffaf8c99ab87f0">Symbol</a>)</td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="el" href="class_qwt_knob.html#a72613ae9e19a921beffaf8c99ab87f0">Symbol</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_knob.html#d99ead1799a7390f7e290062d548385b">symbol</a> () const </td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">virtual QSize </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_knob.html#c5f92af50fdcbf0b501f18efd07294fd">sizeHint</a> () const </td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">virtual QSize </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_knob.html#03d014cd8d025bfeab6e004c53ab6e5b">minimumSizeHint</a> () const </td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_knob.html#fea44f23da7f79a2b790178850c26edd">setScaleDraw</a> (<a class="el" href="class_qwt_round_scale_draw.html">QwtRoundScaleDraw</a> *)</td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">const <a class="el" href="class_qwt_round_scale_draw.html">QwtRoundScaleDraw</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_knob.html#a9c4c23e20fc59b3ca2bfed9fe1e3719">scaleDraw</a> () const </td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="el" href="class_qwt_round_scale_draw.html">QwtRoundScaleDraw</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_knob.html#3154037eec8c76c24577b8bf1d92b871">scaleDraw</a> ()</td></tr><tr><td colspan="2"><br><h2>Protected Member Functions</h2></td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_knob.html#2b078ad2a814d2c464baec97d895b0b5">paintEvent</a> (QPaintEvent *e)</td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_knob.html#577c1fa6f26397ca356e679cce3a5c8c">resizeEvent</a> (QResizeEvent *e)</td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_knob.html#d47b2009eff62ba18205ddfd1f8a3410">draw</a> (QPainter *p, const QRect &ur)</td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_knob.html#d6215b28cce14d6575332440ac0fd707">drawKnob</a> (QPainter *p, const QRect &r)</td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_knob.html#e30bd1ac7e8ce05e7714433864af6e3a">drawMarker</a> (QPainter *p, double arc, const QColor &c)</td></tr></table><hr><h2>Member Enumeration Documentation</h2><a class="anchor" name="a72613ae9e19a921beffaf8c99ab87f0"></a><!-- doxytag: member="QwtKnob::Symbol" ref="a72613ae9e19a921beffaf8c99ab87f0" args="" --><p><table class="mdTable" cellpadding="2" cellspacing="0"> <tr> <td class="mdRow"> <table cellpadding="0" cellspacing="0" border="0"> <tr> <td class="md" nowrap valign="top">enum <a class="el" href="class_qwt_knob.html#a72613ae9e19a921beffaf8c99ab87f0">QwtKnob::Symbol</a> </td> </tr> </table> </td> </tr></table><table cellspacing="5" cellpadding="0" border="0"> <tr> <td> </td> <td><p>Symbol <dl compact><dt><b>See also:</b></dt><dd><a class="el" href="class_qwt_knob.html#767e89f3d4875da7d2074050572e0556">QwtKnob::QwtKnob()</a> </dd></dl><p>Definition at line <a class="el" href="qwt__knob_8h-source.html#l00049">49</a> of file <a class="el" href="qwt__knob_8h-source.html">qwt_knob.h</a>. </td> </tr></table><hr><h2>Constructor & Destructor Documentation</h2><a class="anchor" name="767e89f3d4875da7d2074050572e0556"></a><!-- doxytag: member="QwtKnob::QwtKnob" ref="767e89f3d4875da7d2074050572e0556" args="(QWidget *parent=NULL)" --><p><table class="mdTable" cellpadding="2" cellspacing="0"> <tr> <td class="mdRow"> <table cellpadding="0" cellspacing="0" border="0"> <tr> <td class="md" nowrap valign="top">QwtKnob::QwtKnob </td> <td class="md" valign="top">( </td> <td class="md" nowrap valign="top">QWidget * </td> <td class="mdname1" valign="top" nowrap> <em>parent</em> = <code>NULL</code> </td> <td class="md" valign="top"> ) </td> <td class="md" nowrap><code> [explicit]</code></td> </tr> </table> </td> </tr></table><table cellspacing="5" cellpadding="0" border="0"> <tr> <td> </td> <td><p>Constructor <dl compact><dt><b>Parameters:</b></dt><dd> <table border="0" cellspacing="2" cellpadding="0"> <tr><td valign="top"></td><td valign="top"><em>parent</em> </td><td>Parent widget </td></tr> </table></dl><p>Definition at line <a class="el" href="qwt__knob_8cpp-source.html#l00059">59</a> of file <a class="el" href="qwt__knob_8cpp-source.html">qwt_knob.cpp</a>. </td> </tr></table><a class="anchor" name="13f3e622b333c9918bc61844029f8a70"></a><!-- doxytag: member="QwtKnob::~QwtKnob" ref="13f3e622b333c9918bc61844029f8a70" args="()" --><p><table class="mdTable" cellpadding="2" cellspacing="0"> <tr> <td class="mdRow"> <table cellpadding="0" cellspacing="0" border="0"> <tr> <td class="md" nowrap valign="top">QwtKnob::~QwtKnob </td> <td class="md" valign="top">( </td> <td class="mdname1" valign="top" nowrap> </td> <td class="md" valign="top"> ) </td> <td class="md" nowrap><code> [virtual]</code></td> </tr> </table> </td> </tr></table><table cellspacing="5" cellpadding="0" border="0"> <tr> <td> </td> <td><p>Destructor. <p><p>Definition at line <a class="el" href="qwt__knob_8cpp-source.html#l00099">99</a> of file <a class="el" href="qwt__knob_8cpp-source.html">qwt_knob.cpp</a>. </td> </tr></table><hr><h2>Member Function Documentation</h2><a class="anchor" name="3e19de6a4762aeaf2b95266b20961574"></a><!-- doxytag: member="QwtKnob::borderWidth" ref="3e19de6a4762aeaf2b95266b20961574" args="() const " --><p><table class="mdTable" cellpadding="2" cellspacing="0"> <tr> <td class="mdRow"> <table cellpadding="0" cellspacing="0" border="0"> <tr> <td class="md" nowrap valign="top">int QwtKnob::borderWidth </td> <td class="md" valign="top">( </td> <td class="mdname1" valign="top" nowrap> </td> <td class="md" valign="top"> ) </td> <td class="md" nowrap> const</td> </tr> </table> </td> </tr></table><table cellspacing="5" cellpadding="0" border="0"> <tr> <td> </td> <td><p>Return the border width. <p><p>Definition at line <a class="el" href="qwt__knob_8cpp-source.html#l00475">475</a> of file <a class="el" href="qwt__knob_8cpp-source.html">qwt_knob.cpp</a>. </td> </tr></table><a class="anchor" name="d47b2009eff62ba18205ddfd1f8a3410"></a><!-- doxytag: member="QwtKnob::draw" ref="d47b2009eff62ba18205ddfd1f8a3410" args="(QPainter *p, const QRect &ur)" --><p><table class="mdTable" cellpadding="2" cellspacing="0"> <tr> <td class="mdRow"> <table cellpadding="0" cellspacing="0" border="0"> <tr> <td class="md" nowrap valign="top">void QwtKnob::draw </td> <td class="md" valign="top">( </td> <td class="md" nowrap valign="top">QPainter * </td> <td class="mdname" nowrap> <em>p</em>, </td> </tr> <tr> <td class="md" nowrap align="right"></td> <td class="md"></td> <td class="md" nowrap>const QRect & </td> <td class="mdname" nowrap> <em>ur</em></td> </tr> <tr> <td class="md"></td> <td class="md">) </td> <td class="md" colspan="2"><code> [protected]</code></td> </tr> </table> </td> </tr></table><table cellspacing="5" cellpadding="0" border="0"> <tr> <td> </td> <td><p>Repaint the knob. <p><p>Definition at line <a class="el" href="qwt__knob_8cpp-source.html#l00382">382</a> of file <a class="el" href="qwt__knob_8cpp-source.html">qwt_knob.cpp</a>.<p>References <a class="el" href="qwt__abstract__scale__draw_8cpp-source.html#l00164">QwtAbstractScaleDraw::draw()</a>, and <a class="el" href="qwt__knob_8cpp-source.html#l00170">scaleDraw()</a>.<p>Referenced by <a class="el" href="qwt__knob_8cpp-source.html#l00362">paintEvent()</a>. </td> </tr></table><a class="anchor" name="d6215b28cce14d6575332440ac0fd707"></a><!-- doxytag: member="QwtKnob::drawKnob" ref="d6215b28cce14d6575332440ac0fd707" args="(QPainter *p, const QRect &r)" --><p><table class="mdTable" cellpadding="2" cellspacing="0"> <tr> <td class="mdRow"> <table cellpadding="0" cellspacing="0" border="0"> <tr> <td class="md" nowrap valign="top">void QwtKnob::drawKnob </td> <td class="md" valign="top">( </td> <td class="md" nowrap valign="top">QPainter * </td> <td class="mdname" nowrap> <em>painter</em>, </td> </tr> <tr> <td class="md" nowrap align="right"></td> <td class="md"></td> <td class="md" nowrap>const QRect & </td> <td class="mdname" nowrap> <em>r</em></td> </tr>⌨️ 快捷键说明
复制代码Ctrl + C
搜索代码Ctrl + F
全屏模式F11
增大字号Ctrl + =
减小字号Ctrl + -
显示快捷键?