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<h1>QwtAbstractSlider Class Reference</h1> </div>
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<!-- doxytag: class="QwtAbstractSlider" --><!-- doxytag: inherits="QwtDoubleRange" -->
<p>An abstract base class for slider widgets.
<a href="#_details">More...</a></p>
<p><code>#include <<a class="el" href="qwt__abstract__slider_8h_source.html">qwt_abstract_slider.h</a>></code></p>
<div class="dynheader">
Inheritance diagram for QwtAbstractSlider:</div>
<div class="dyncontent">
<div class="center"><img src="class_qwt_abstract_slider__inherit__graph.png" border="0" usemap="#_qwt_abstract_slider_inherit__map" alt="Inheritance graph"/></div>
<map name="_qwt_abstract_slider_inherit__map" id="_qwt_abstract_slider_inherit__map">
<area shape="rect" id="node5" href="class_qwt_dial.html" title="QwtDial class provides a rounded range control." alt="" coords="96,160,163,189"/><area shape="rect" id="node11" href="class_qwt_knob.html" title="The Knob Widget." alt="" coords="187,160,261,189"/><area shape="rect" id="node13" href="class_qwt_slider.html" title="The Slider Widget." alt="" coords="285,160,363,189"/><area shape="rect" id="node15" href="class_qwt_wheel.html" title="The Wheel Widget." alt="" coords="387,160,469,189"/><area shape="rect" id="node2" href="class_qwt_double_range.html" title="A class which controls a value within an interval." alt="" coords="212,5,335,35"/><area shape="rect" id="node7" href="class_qwt_analog_clock.html" title="An analog clock." alt="" coords="5,237,123,267"/><area shape="rect" id="node9" href="class_qwt_compass.html" title="A Compass Widget." alt="" coords="147,237,245,267"/></map>
<center><span class="legend">[<a href="graph_legend.html">legend</a>]</span></center></div>
<p><a href="class_qwt_abstract_slider-members.html">List of all members.</a></p>
<table class="memberdecls">
<tr><td colspan="2"><h2><a name="pub-types"></a>
Public Types</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">enum  </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_slider.html#ae4c0c4844ac6a35356f3c529a8eae154">ScrollMode</a> { <br/>
  <a class="el" href="class_qwt_abstract_slider.html#ae4c0c4844ac6a35356f3c529a8eae154a807ce5a253287dc7baf7a9c3661b35c1">ScrNone</a>,
<br/>
  <a class="el" href="class_qwt_abstract_slider.html#ae4c0c4844ac6a35356f3c529a8eae154a3b131974e6816c1f1e3223b2976f7e50">ScrMouse</a>,
<br/>
  <a class="el" href="class_qwt_abstract_slider.html#ae4c0c4844ac6a35356f3c529a8eae154a0c20ad978c3bb2e833a476b3d8b3cecc">ScrTimer</a>,
<br/>
  <b>ScrDirect</b>,
<br/>
  <a class="el" href="class_qwt_abstract_slider.html#ae4c0c4844ac6a35356f3c529a8eae154a9e18dc0c7c8afdfbec8d0962144d971e">ScrPage</a>
<br/>
}</td></tr>
<tr><td colspan="2"><h2><a name="pub-slots"></a>
Public Slots</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_slider.html#a50ed1e265beaa1c8adbe718caa023e50">fitValue</a> (double val)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_slider.html#a5fccdb2ca370bba9ed4d29864fd80788">incValue</a> (int steps)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_slider.html#a9cc63283a2d4f0bcbb67fd331629a318">setReadOnly</a> (bool)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_slider.html#ac3713f8989b647cb79f0a5894991e36a">setValue</a> (double val)</td></tr>
<tr><td colspan="2"><h2><a name="signals"></a>
Signals</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_slider.html#ae59671d27931b545073e599a10967452">sliderMoved</a> (double value)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_slider.html#afd92a0c79c113b3c5e9952d12cff80f5">sliderPressed</a> ()</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_slider.html#ab94184da7a029a5f586671251ff380ea">sliderReleased</a> ()</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_slider.html#a6bc5c410cd56119c6ad50743c9a46af1">valueChanged</a> (double value)</td></tr>
<tr><td colspan="2"><h2><a name="pub-methods"></a>
Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_double_range.html#a19b85337d4ab0b5f0579b02e4fb29a8f">incPages</a> (int)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_slider.html#a040fd1fd03592c524314bf4b5539608d">isReadOnly</a> () const </td></tr>
<tr><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_slider.html#a87c750f098cb5f70306a7908339cb88e">isValid</a> () const </td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual double </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_slider.html#a130105fc2001c53cea65f21b03f0b5db">mass</a> () const </td></tr>
<tr><td class="memItemLeft" align="right" valign="top">double </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_double_range.html#a215275a1a8b4218a424ee8444c7fe409">maxValue</a> () const </td></tr>
<tr><td class="memItemLeft" align="right" valign="top">double </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_double_range.html#a8b8650a6f8a96144d3af21207ee71637">minValue</a> () const </td></tr>
<tr><td class="memItemLeft" align="right" valign="top">Qt::Orientation </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_slider.html#a4d2521b9c31ec64b71d8e1771b156d88">orientation</a> () const </td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_double_range.html#ac12a5c43dc5839913379982ec40a39d8">pageSize</a> () const </td></tr>
<tr><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_double_range.html#ad1efbcbf29dbc74f3f378292b76b007b">periodic</a> () const </td></tr>
<tr><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_slider.html#a5d23c0db6786757d7523b7fbfb3c34c9">QwtAbstractSlider</a> (Qt::Orientation, QWidget *parent=NULL)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_slider.html#a305b137fe4dd80cba307fe1b4bd46272">setMass</a> (double val)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_slider.html#a6b0fdc50bfbb0a8bb40f0dc6bf493b2c">setOrientation</a> (Qt::Orientation o)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_double_range.html#a95fa6a4e44fc47726d939155bb6f6f1f">setPeriodic</a> (bool tf)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_double_range.html#a43891011664b74b8e5454763a3f5ff21">setRange</a> (double vmin, double vmax, double vstep=0.0, int pagesize=1)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_double_range.html#a29ed5fc66439def424a8ad773eea285d">setStep</a> (double)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_slider.html#a91c03aada61745d8924f47319afefee1">setTracking</a> (bool enable)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_slider.html#a945ba36e1b8e20d362083f6737b0601d">setUpdateTime</a> (int t)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_slider.html#a79d99f14ebd47dfede8135845c90cedb">setValid</a> (bool valid)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">double </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_double_range.html#a0cb8cc60548c10cb1d98e54387961967">step</a> () const </td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_slider.html#ab648229c972d0c3258d30b0c43eb5efc">stopMoving</a> ()</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">double </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_double_range.html#a7777cf257c812579c4891512f1b6cad0">value</a> () const </td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_slider.html#a31b9e0314988b7d547c9ded625014bbb">~QwtAbstractSlider</a> ()</td></tr>
<tr><td colspan="2"><h2><a name="pro-methods"></a>
Protected Member Functions</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">double </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_double_range.html#a595c04ed863eb7f0adaf94440087fe0a">exactPrevValue</a> () const </td></tr>
<tr><td class="memItemLeft" align="right" valign="top">double </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_double_range.html#a705b76d28882d37bc5313d6c38c9a720">exactValue</a> () const </td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_slider.html#a4124aa3b1e462d57ea2693214e66da0b">getScrollMode</a> (const QPoint &pos, <a class="el" href="class_qwt_abstract_slider.html#ae4c0c4844ac6a35356f3c529a8eae154">ScrollMode</a> &scrollMode, int &direction) const =0</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual double </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_slider.html#a6e26a993536813c2d9846a28f3c27aa7">getValue</a> (const QPoint &p)=0</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_slider.html#a4d55f8ffab93d8610bc026e00e3bdc81">keyPressEvent</a> (QKeyEvent *e)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_slider.html#af9599b94c6771181ede59a84e33c0e6e">mouseMoveEvent</a> (QMouseEvent *e)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">double </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_slider.html#a138397a755057932b5da72f526fc74e6">mouseOffset</a> () const </td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_slider.html#a60e33a71d34b23e9ebefebaa24cdd8c2">mousePressEvent</a> (QMouseEvent *e)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_slider.html#a8f27604396c9d2544931638b806c13e3">mouseReleaseEvent</a> (QMouseEvent *e)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">double </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_double_range.html#a38768187bef94dd5e5a2c8664746b365">prevValue</a> () const </td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_double_range.html#a3583134a1ac32706aa4742088bb9d4dc">rangeChange</a> ()</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_slider.html#a4a1b9e022180a8567f09632388002396">scrollMode</a> () const </td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_slider.html#a120e5a03094ef0baf793000972a21722">setMouseOffset</a> (double)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_slider.html#af9849c5c21412c7308cac6ad6a420e47">setPosition</a> (const QPoint &)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_double_range.html#a86641f8755ed172ca4cf72d36df539ca">stepChange</a> ()</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_slider.html#a26f4d684524925891113d46ffe383b5d">timerEvent</a> (QTimerEvent *e)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_slider.html#a2f04dc51e4402b51fef3250bcc99dc7f">valueChange</a> ()</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_slider.html#a25d5c9fe00c81e310304461fa6e8ec97">wheelEvent</a> (QWheelEvent *e)</td></tr>
</table>
<hr/><a name="_details"></a><h2>Detailed Description</h2>
<div class="textblock"><p>An abstract base class for slider widgets. </p>
<p><a class="el" href="class_qwt_abstract_slider.html" title="An abstract base class for slider widgets.">QwtAbstractSlider</a> is a base class for slider widgets. It handles mouse events and updates the slider's value accordingly. Derived classes only have to implement the <a class="el" href="class_qwt_abstract_slider.html#a6e26a993536813c2d9846a28f3c27aa7" title="Determine the value corresponding to a specified poind.">getValue()</a> and <a class="el" href="class_qwt_abstract_slider.html#a4124aa3b1e462d57ea2693214e66da0b" title="Determine what to do when the user presses a mouse button.">getScrollMode()</a> members, and should react to a <a class="el" href="class_qwt_abstract_slider.html#a2f04dc51e4402b51fef3250bcc99dc7f">valueChange()</a>, which normally requires repainting. </p>
</div><hr/><h2>Member Enumeration Documentation</h2>
<a class="anchor" id="ae4c0c4844ac6a35356f3c529a8eae154"></a><!-- doxytag: member="QwtAbstractSlider::ScrollMode" ref="ae4c0c4844ac6a35356f3c529a8eae154" args="" -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">enum <a class="el" href="class_qwt_abstract_slider.html#ae4c0c4844ac6a35356f3c529a8eae154">QwtAbstractSlider::ScrollMode</a></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>Scroll mode </p>
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="class_qwt_abstract_slider.html#a4124aa3b1e462d57ea2693214e66da0b" title="Determine what to do when the user presses a mouse button.">getScrollMode()</a> </dd></dl>
<dl><dt><b>Enumerator: </b></dt><dd><table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"><em><a class="anchor" id="ae4c0c4844ac6a35356f3c529a8eae154a807ce5a253287dc7baf7a9c3661b35c1"></a><!-- doxytag: member="ScrNone" ref="ae4c0c4844ac6a35356f3c529a8eae154a807ce5a253287dc7baf7a9c3661b35c1" args="" -->ScrNone</em> </td><td>
<p>Scrolling switched off. Don't change the value. </p>
</td></tr>
<tr><td valign="top"><em><a class="anchor" id="ae4c0c4844ac6a35356f3c529a8eae154a3b131974e6816c1f1e3223b2976f7e50"></a><!-- doxytag: member="ScrMouse" ref="ae4c0c4844ac6a35356f3c529a8eae154a3b131974e6816c1f1e3223b2976f7e50" args="" -->ScrMouse</em> </td><td>
<p>Change the value while the user keeps the button pressed and moves the mouse. </p>
</td></tr>
<tr><td valign="top"><em><a class="anchor" id="ae4c0c4844ac6a35356f3c529a8eae154a0c20ad978c3bb2e833a476b3d8b3cecc"></a><!-- doxytag: member="ScrTimer" ref="ae4c0c4844ac6a35356f3c529a8eae154a0c20ad978c3bb2e833a476b3d8b3cecc" args="" -->ScrTimer</em> </td><td>
<p>Automatic scrolling. Increment the value in the specified direction as long as the user keeps the button pressed. </p>
</td></tr>
<tr><td valign="top"><em><a class="anchor" id="ae4c0c4844ac6a35356f3c529a8eae154a9e18dc0c7c8afdfbec8d0962144d971e"></a><!-- doxytag: member="ScrPage" ref="ae4c0c4844ac6a35356f3c529a8eae154a9e18dc0c7c8afdfbec8d0962144d971e" args="" -->ScrPage</em> </td><td>
<p>Automatic scrolling. Same as ScrTimer, but increment by page size. </p>
</td></tr>
</table>
</dd>
</dl>
</div>
</div>
<hr/><h2>Constructor & Destructor Documentation</h2>
<a class="anchor" id="a5d23c0db6786757d7523b7fbfb3c34c9"></a><!-- doxytag: member="QwtAbstractSlider::QwtAbstractSlider" ref="a5d23c0db6786757d7523b7fbfb3c34c9" args="(Qt::Orientation, QWidget *parent=NULL)" -->
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<td class="memname">QwtAbstractSlider::QwtAbstractSlider </td>
<td>(</td>
<td class="paramtype">Qt::Orientation </td>
<td class="paramname"><em>orientation</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">QWidget * </td>
<td class="paramname"><em>parent</em> = <code>NULL</code> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td><code> [explicit]</code></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>Constructor. </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">orientation</td><td>Orientation </td></tr>
<tr><td class="paramname">parent</td><td>Parent widget </td></tr>
</table>
</dd>
</dl>
</div>
</div>
<a class="anchor" id="a31b9e0314988b7d547c9ded625014bbb"></a><!-- doxytag: member="QwtAbstractSlider::~QwtAbstractSlider" ref="a31b9e0314988b7d547c9ded625014bbb" args="()" -->
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<td class="memname">QwtAbstractSlider::~QwtAbstractSlider </td>
<td>(</td>
<td class="paramname"></td><td>)</td>
<td><code> [virtual]</code></td>
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<p>Destructor. </p>
</div>
</div>
<hr/><h2>Member Function Documentation</h2>
<a class="anchor" id="a595c04ed863eb7f0adaf94440087fe0a"></a><!-- doxytag: member="QwtAbstractSlider::exactPrevValue" ref="a595c04ed863eb7f0adaf94440087fe0a" args="() const " -->
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<td class="memname">double QwtDoubleRange::exactPrevValue </td>
<td>(</td>
<td class="paramname"></td><td>)</td>
<td> const<code> [protected, inherited]</code></td>
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<p>Returns the exact previous value. </p>
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<a class="anchor" id="a705b76d28882d37bc5313d6c38c9a720"></a><!-- doxytag: member="QwtAbstractSlider::exactValue" ref="a705b76d28882d37bc5313d6c38c9a720" args="() const " -->
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<td class="memname">double QwtDoubleRange::exactValue </td>
<td>(</td>
<td class="paramname"></td><td>)</td>
<td> const<code> [protected, inherited]</code></td>
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<p>Returns the exact value. </p>
<p>The exact value is the value which <a class="el" href="class_qwt_double_range.html#a7777cf257c812579c4891512f1b6cad0" title="Returns the current value.">QwtDoubleRange::value</a> would return if the value were not adjusted to the step raster. It differs from the current value only if <a class="el" href="class_qwt_double_range.html#a63bc8ea5e7ecd776b7d32d21db1ea668" title="Adjust the value to the closest point in the step raster.">fitValue()</a> or <a class="el" href="class_qwt_double_range.html#a299c35c72e9b69f5a0e3dcd2b7da775b" title="Increment the value by a specified number of steps.">incValue()</a> have been used before. This function is intended for internal use in derived classes. </p>
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<a class="anchor" id="a50ed1e265beaa1c8adbe718caa023e50"></a><!-- doxytag: member="QwtAbstractSlider::fitValue" ref="a50ed1e265beaa1c8adbe718caa023e50" args="(double val)" -->
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<td class="memname">void QwtAbstractSlider::fitValue </td>
<td>(</td>
<td class="paramtype">double </td>
<td class="paramname"><em>value</em></td><td>)</td>
<td><code> [virtual, slot]</code></td>
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<p>Set the slider's value to the nearest integer multiple of the step size. </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">value</td><td>Value </td></tr>
</table>
</dd>
</dl>
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="class_qwt_abstract_slider.html#ac3713f8989b647cb79f0a5894991e36a" title="Move the slider to a specified value.">setValue()</a>, <a class="el" href="class_qwt_abstract_slider.html#a5fccdb2ca370bba9ed4d29864fd80788" title="Increment the value by a specified number of steps.">incValue()</a> </dd></dl>
<p>Reimplemented from <a class="el" href="class_qwt_double_range.html#a63bc8ea5e7ecd776b7d32d21db1ea668">QwtDoubleRange</a>.</p>
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<a class="anchor" id="a4124aa3b1e462d57ea2693214e66da0b"></a><!-- doxytag: member="QwtAbstractSlider::getScrollMode" ref="a4124aa3b1e462d57ea2693214e66da0b" args="(const QPoint &pos, ScrollMode &scrollMode, int &direction) const =0" -->
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<td class="memname">virtual void QwtAbstractSlider::getScrollMode </td>
<td>(</td>
<td class="paramtype">const QPoint & </td>
<td class="paramname"><em>pos</em>, </td>
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<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="class_qwt_abstract_slider.html#ae4c0c4844ac6a35356f3c529a8eae154">ScrollMode</a> & </td>
<td class="paramname"><em>scrollMode</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">int & </td>
<td class="paramname"><em>direction</em> </td>
</tr>
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<td></td>
<td>)</td>
<td></td><td> const<code> [protected, pure virtual]</code></td>
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<p>Determine what to do when the user presses a mouse button. </p>
<p>This function is abstract and has to be implemented by derived classes. It is called on a mousePress event. The derived class can determine what should happen next in dependence of the position where the mouse was pressed by returning scrolling mode and direction.</p>
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">pos</td><td>point where the mouse was pressed </td></tr>
</table>
</dd>
</dl>
<dl><dt><b>Return values:</b></dt><dd>
<table class="retval">
<tr><td class="paramname">scrollMode</td><td>The scrolling mode </td></tr>
<tr><td class="paramname">direction</td><td>direction: 1, 0, or -1. </td></tr>
</table>
</dd>
</dl>
<p>Implemented in <a class="el" href="class_qwt_dial.html#a26e8e2fe68799a5ee91acd99e81177e9">QwtDial</a>, <a class="el" href="class_qwt_knob.html#a42e3a55eb22c249311e5cacefb22ae71">QwtKnob</a>, <a class="el" href="class_qwt_slider.html#aea81bd1a595840a9eb0eb46254366110">QwtSlider</a>, and <a class="el" href="class_qwt_wheel.html#a0fdd78e189618b7c40832e4e52954653">QwtWheel</a>.</p>
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<a class="anchor" id="a6e26a993536813c2d9846a28f3c27aa7"></a><!-- doxytag: member="QwtAbstractSlider::getValue" ref="a6e26a993536813c2d9846a28f3c27aa7" args="(const QPoint &p)=0" -->
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<td class="memname">virtual double QwtAbstractSlider::getValue </td>
<td>(</td>
<td class="paramtype">const QPoint & </td>
<td class="paramname"><em>p</em></td><td>)</td>
<td><code> [protected, pure virtual]</code></td>
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<p>Determine the value corresponding to a specified poind. </p>
<p>This is an abstract virtual function which is called when the user presses or releases a mouse button or moves the mouse. It has to be implemented by the derived class. </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">p</td><td>point </td></tr>
</table>
</dd>
</dl>
<p>Implemented in <a class="el" href="class_qwt_dial.html#a7acb904d2f2e9b20178cd9a9d9b37d3f">QwtDial</a>, <a class="el" href="class_qwt_knob.html#a8bc3dd547ed410548b451f074f633546">QwtKnob</a>, <a class="el" href="class_qwt_slider.html#a9dce1bf10fdcd92feae56dd77a455358">QwtSlider</a>, and <a class="el" href="class_qwt_wheel.html#ae356508d15272291857ca9ca6c84134e">QwtWheel</a>.</p>
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<a class="anchor" id="a19b85337d4ab0b5f0579b02e4fb29a8f"></a><!-- doxytag: member="QwtAbstractSlider::incPages" ref="a19b85337d4ab0b5f0579b02e4fb29a8f" args="(int)" -->
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<td class="memname">void QwtDoubleRange::incPages </td>
<td>(</td>
<td class="paramtype">int </td>
<td class="paramname"><em>nPages</em></td><td>)</td>
<td><code> [virtual, inherited]</code></td>
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<p>Increment the value by a specified number of pages. </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">nPages</td><td>Number of pages to increment. A negative number decrements the value. </td></tr>
</table>
</dd>
</dl>
<dl class="warning"><dt><b>Warning:</b></dt><dd>The Page size is specified in the constructor. </dd></dl>
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<a class="anchor" id="a5fccdb2ca370bba9ed4d29864fd80788"></a><!-- doxytag: member="QwtAbstractSlider::incValue" ref="a5fccdb2ca370bba9ed4d29864fd80788" args="(int steps)" -->
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<td class="memname">void QwtAbstractSlider::incValue </td>
<td>(</td>
<td class="paramtype">int </td>
<td class="paramname"><em>steps</em></td><td>)</td>
<td><code> [virtual, slot]</code></td>
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<p>Increment the value by a specified number of steps. </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">steps</td><td>number of steps </td></tr>
</table>
</dd>
</dl>
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="class_qwt_abstract_slider.html#ac3713f8989b647cb79f0a5894991e36a" title="Move the slider to a specified value.">setValue()</a> </dd></dl>
<p>Reimplemented from <a class="el" href="class_qwt_double_range.html#a299c35c72e9b69f5a0e3dcd2b7da775b">QwtDoubleRange</a>.</p>
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<a class="anchor" id="a040fd1fd03592c524314bf4b5539608d"></a><!-- doxytag: member="QwtAbstractSlider::isReadOnly" ref="a040fd1fd03592c524314bf4b5539608d" args="() const " -->
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<td class="memname">bool QwtAbstractSlider::isReadOnly </td>
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<td> const</td>
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<p>In read only mode the slider can't be controlled by mouse or keyboard.</p>
<dl class="return"><dt><b>Returns:</b></dt><dd>true if read only </dd></dl>
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="class_qwt_abstract_slider.html#a9cc63283a2d4f0bcbb67fd331629a318">setReadOnly()</a> </dd></dl>
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<a class="anchor" id="a87c750f098cb5f70306a7908339cb88e"></a><!-- doxytag: member="QwtAbstractSlider::isValid" ref="a87c750f098cb5f70306a7908339cb88e" args="() const " -->
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<td class="memname">bool QwtAbstractSlider::isValid </td>
<td>(</td>
<td class="paramname"></td><td>)</td>
<td> const<code> [inline]</code></td>
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<dl class="see"><dt><b>See also:</b></dt><dd>QwtDblRange::isValid() </dd></dl>
<p>Reimplemented from <a class="el" href="class_qwt_double_range.html#afc4921deb3f68a64cc08b0654a040bc6">QwtDoubleRange</a>.</p>
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<a class="anchor" id="a4d55f8ffab93d8610bc026e00e3bdc81"></a><!-- doxytag: member="QwtAbstractSlider::keyPressEvent" ref="a4d55f8ffab93d8610bc026e00e3bdc81" args="(QKeyEvent *e)" -->
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<td class="memname">void QwtAbstractSlider::keyPressEvent </td>
<td>(</td>
<td class="paramtype">QKeyEvent * </td>
<td class="paramname"><em>e</em></td><td>)</td>
<td><code> [protected, virtual]</code></td>
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<p>Handles key events</p>
<ul>
<li>Key_Down, KeyLeft<br/>
Decrement by 1</li>
<li>Key_Up, Key_Right<br/>
Increment by 1</li>
</ul>
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">e</td><td>Key event </td></tr>
</table>
</dd>
</dl>
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="class_qwt_abstract_slider.html#a040fd1fd03592c524314bf4b5539608d">isReadOnly()</a> </dd></dl>
<p>Reimplemented in <a class="el" href="class_qwt_compass.html#ad4f31e6837ea045834fe67d192a4209d">QwtCompass</a>, and <a class="el" href="class_qwt_dial.html#a61a2341a76abc20ea5bd72a0485be136">QwtDial</a>.</p>
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<a class="anchor" id="a130105fc2001c53cea65f21b03f0b5db"></a><!-- doxytag: member="QwtAbstractSlider::mass" ref="a130105fc2001c53cea65f21b03f0b5db" args="() const " -->
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<td class="memname">double QwtAbstractSlider::mass </td>
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<td class="paramname"></td><td>)</td>
<td> const<code> [virtual]</code></td>
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<dl class="return"><dt><b>Returns:</b></dt><dd>mass </dd></dl>
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="class_qwt_abstract_slider.html#a305b137fe4dd80cba307fe1b4bd46272" title="Set the slider's mass for flywheel effect.">setMass()</a> </dd></dl>
<p>Reimplemented in <a class="el" href="class_qwt_wheel.html#a55de1496f0eef04da9bc293306a40df6">QwtWheel</a>.</p>
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<a class="anchor" id="a215275a1a8b4218a424ee8444c7fe409"></a><!-- doxytag: member="QwtAbstractSlider::maxValue" ref="a215275a1a8b4218a424ee8444c7fe409" args="() const " -->
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<td class="memname">double QwtDoubleRange::maxValue </td>
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<td class="paramname"></td><td>)</td>
<td> const<code> [inherited]</code></td>
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<p>Returns the value of the second border of the range. </p>
<p>maxValue returns the value which has been specified as the second parameter in <a class="el" href="class_qwt_double_range.html#a43891011664b74b8e5454763a3f5ff21" title="Specify range and step size.">QwtDoubleRange::setRange</a>.</p>
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="class_qwt_double_range.html#a43891011664b74b8e5454763a3f5ff21" title="Specify range and step size.">setRange()</a> </dd></dl>
<p>Reimplemented in <a class="el" href="class_qwt_counter.html#a1db7484bea02c18681f9d628cd88695f">QwtCounter</a>.</p>
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<a class="anchor" id="a8b8650a6f8a96144d3af21207ee71637"></a><!-- doxytag: member="QwtAbstractSlider::minValue" ref="a8b8650a6f8a96144d3af21207ee71637" args="() const " -->
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<td class="memname">double QwtDoubleRange::minValue </td>
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<td> const<code> [inherited]</code></td>
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<p>Returns the value at the first border of the range. </p>
<p>minValue returns the value which has been specified as the first parameter in <a class="el" href="class_qwt_double_range.html#a43891011664b74b8e5454763a3f5ff21" title="Specify range and step size.">setRange()</a>.</p>
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="class_qwt_double_range.html#a43891011664b74b8e5454763a3f5ff21" title="Specify range and step size.">setRange()</a> </dd></dl>
<p>Reimplemented in <a class="el" href="class_qwt_counter.html#aa8ccc5f0626ae1ad4f542b0fdb51cc08">QwtCounter</a>.</p>
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<a class="anchor" id="af9599b94c6771181ede59a84e33c0e6e"></a><!-- doxytag: member="QwtAbstractSlider::mouseMoveEvent" ref="af9599b94c6771181ede59a84e33c0e6e" args="(QMouseEvent *e)" -->
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<td class="memname">void QwtAbstractSlider::mouseMoveEvent </td>
<td>(</td>
<td class="paramtype">QMouseEvent * </td>
<td class="paramname"><em>e</em></td><td>)</td>
<td><code> [protected, virtual]</code></td>
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<p>Mouse Move Event handler </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">e</td><td>Mouse event </td></tr>
</table>
</dd>
</dl>
</div>
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<a class="anchor" id="a138397a755057932b5da72f526fc74e6"></a><!-- doxytag: member="QwtAbstractSlider::mouseOffset" ref="a138397a755057932b5da72f526fc74e6" args="() const " -->
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<td class="memname">double QwtAbstractSlider::mouseOffset </td>
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<td class="paramname"></td><td>)</td>
<td> const<code> [protected]</code></td>
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<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="class_qwt_abstract_slider.html#a120e5a03094ef0baf793000972a21722">setMouseOffset()</a> </dd></dl>
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<td class="memname">void QwtAbstractSlider::mousePressEvent </td>
<td>(</td>
<td class="paramtype">QMouseEvent * </td>
<td class="paramname"><em>e</em></td><td>)</td>
<td><code> [protected, virtual]</code></td>
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<p>Mouse press event handler </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">e</td><td>Mouse event </td></tr>
</table>
</dd>
</dl>
</div>
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<a class="anchor" id="a8f27604396c9d2544931638b806c13e3"></a><!-- doxytag: member="QwtAbstractSlider::mouseReleaseEvent" ref="a8f27604396c9d2544931638b806c13e3" args="(QMouseEvent *e)" -->
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<td class="memname">void QwtAbstractSlider::mouseReleaseEvent </td>
<td>(</td>
<td class="paramtype">QMouseEvent * </td>
<td class="paramname"><em>e</em></td><td>)</td>
<td><code> [protected, virtual]</code></td>
</tr>
</table>
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<p>Mouse Release Event handler </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">e</td><td>Mouse event </td></tr>
</table>
</dd>
</dl>
</div>
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<a class="anchor" id="a4d2521b9c31ec64b71d8e1771b156d88"></a><!-- doxytag: member="QwtAbstractSlider::orientation" ref="a4d2521b9c31ec64b71d8e1771b156d88" args="() const " -->
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<td class="memname">Qt::Orientation QwtAbstractSlider::orientation </td>
<td>(</td>
<td class="paramname"></td><td>)</td>
<td> const</td>
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<dl class="return"><dt><b>Returns:</b></dt><dd>Orientation </dd></dl>
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="class_qwt_abstract_slider.html#a6b0fdc50bfbb0a8bb40f0dc6bf493b2c" title="Set the orientation.">setOrientation()</a> </dd></dl>
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<a class="anchor" id="ac12a5c43dc5839913379982ec40a39d8"></a><!-- doxytag: member="QwtAbstractSlider::pageSize" ref="ac12a5c43dc5839913379982ec40a39d8" args="() const " -->
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<td class="memname">int QwtDoubleRange::pageSize </td>
<td>(</td>
<td class="paramname"></td><td>)</td>
<td> const<code> [inherited]</code></td>
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<p>Returns the page size in steps. </p>
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<a class="anchor" id="ad1efbcbf29dbc74f3f378292b76b007b"></a><!-- doxytag: member="QwtAbstractSlider::periodic" ref="ad1efbcbf29dbc74f3f378292b76b007b" args="() const " -->
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<td class="memname">bool QwtDoubleRange::periodic </td>
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<td class="paramname"></td><td>)</td>
<td> const<code> [inherited]</code></td>
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<p>Returns true if the range is periodic. </p>
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="class_qwt_double_range.html#a95fa6a4e44fc47726d939155bb6f6f1f" title="Make the range periodic.">setPeriodic()</a> </dd></dl>
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<a class="anchor" id="a38768187bef94dd5e5a2c8664746b365"></a><!-- doxytag: member="QwtAbstractSlider::prevValue" ref="a38768187bef94dd5e5a2c8664746b365" args="() const " -->
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<td class="memname">double QwtDoubleRange::prevValue </td>
<td>(</td>
<td class="paramname"></td><td>)</td>
<td> const<code> [protected, inherited]</code></td>
</tr>
</table>
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<p>Returns the previous value. </p>
</div>
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<a class="anchor" id="a3583134a1ac32706aa4742088bb9d4dc"></a><!-- doxytag: member="QwtAbstractSlider::rangeChange" ref="a3583134a1ac32706aa4742088bb9d4dc" args="()" -->
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<td class="memname">void QwtDoubleRange::rangeChange </td>
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<td class="paramname"></td><td>)</td>
<td><code> [protected, virtual, inherited]</code></td>
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<p>Notify a change of the range. </p>
<p>This virtual function is called whenever the range changes. The default implementation does nothing. </p>
<p>Reimplemented in <a class="el" href="class_qwt_counter.html#a4fd4e750b1f5a852250e57778a3e4159">QwtCounter</a>, <a class="el" href="class_qwt_dial.html#a81b21a9954c5561af549214ee153573c">QwtDial</a>, and <a class="el" href="class_qwt_slider.html#ae8eff3a30ef4086cac42d244cef81ac0">QwtSlider</a>.</p>
</div>
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<a class="anchor" id="a4a1b9e022180a8567f09632388002396"></a><!-- doxytag: member="QwtAbstractSlider::scrollMode" ref="a4a1b9e022180a8567f09632388002396" args="() const " -->
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<td class="memname">int QwtAbstractSlider::scrollMode </td>
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<td class="paramname"></td><td>)</td>
<td> const<code> [protected]</code></td>
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<p>sa ScrollMode </p>
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<a class="anchor" id="a305b137fe4dd80cba307fe1b4bd46272"></a><!-- doxytag: member="QwtAbstractSlider::setMass" ref="a305b137fe4dd80cba307fe1b4bd46272" args="(double val)" -->
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<td class="memname">void QwtAbstractSlider::setMass </td>
<td>(</td>
<td class="paramtype">double </td>
<td class="paramname"><em>val</em></td><td>)</td>
<td><code> [virtual]</code></td>
</tr>
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<p>Set the slider's mass for flywheel effect. </p>
<p>If the slider's mass is greater then 0, it will continue to move after the mouse button has been released. Its speed decreases with time at a rate depending on the slider's mass. A large mass means that it will continue to move for a long time.</p>
<p>Derived widgets may overload this function to make it public.</p>
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">val</td><td>New mass in kg</td></tr>
</table>
</dd>
</dl>
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="class_qwt_abstract_slider.html#a130105fc2001c53cea65f21b03f0b5db">mass()</a> </dd></dl>
<p>Reimplemented in <a class="el" href="class_qwt_wheel.html#a2af8b9b10ebff58b351027208c1e2b86">QwtWheel</a>.</p>
</div>
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<a class="anchor" id="a120e5a03094ef0baf793000972a21722"></a><!-- doxytag: member="QwtAbstractSlider::setMouseOffset" ref="a120e5a03094ef0baf793000972a21722" args="(double)" -->
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<td class="memname">void QwtAbstractSlider::setMouseOffset </td>
<td>(</td>
<td class="paramtype">double </td>
<td class="paramname"><em>offset</em></td><td>)</td>
<td><code> [protected]</code></td>
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<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="class_qwt_abstract_slider.html#a138397a755057932b5da72f526fc74e6">mouseOffset()</a> </dd></dl>
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<a class="anchor" id="a6b0fdc50bfbb0a8bb40f0dc6bf493b2c"></a><!-- doxytag: member="QwtAbstractSlider::setOrientation" ref="a6b0fdc50bfbb0a8bb40f0dc6bf493b2c" args="(Qt::Orientation o)" -->
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<td class="memname">void QwtAbstractSlider::setOrientation </td>
<td>(</td>
<td class="paramtype">Qt::Orientation </td>
<td class="paramname"><em>o</em></td><td>)</td>
<td><code> [virtual]</code></td>
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<p>Set the orientation. </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">o</td><td>Orientation. Allowed values are Qt::Horizontal and Qt::Vertical. </td></tr>
</table>
</dd>
</dl>
<p>Reimplemented in <a class="el" href="class_qwt_slider.html#a3a5d51f56dee5e51dc37bb6f546b16b5">QwtSlider</a>, and <a class="el" href="class_qwt_wheel.html#acae74c8161fd1df728f26253dd1defa8">QwtWheel</a>.</p>
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<a class="anchor" id="a95fa6a4e44fc47726d939155bb6f6f1f"></a><!-- doxytag: member="QwtAbstractSlider::setPeriodic" ref="a95fa6a4e44fc47726d939155bb6f6f1f" args="(bool tf)" -->
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<td class="memname">void QwtDoubleRange::setPeriodic </td>
<td>(</td>
<td class="paramtype">bool </td>
<td class="paramname"><em>tf</em></td><td>)</td>
<td><code> [inherited]</code></td>
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<p>Make the range periodic. </p>
<p>When the range is periodic, the value will be set to a point inside the interval such that</p>
<div class="fragment"><pre class="fragment">point = value + n * width </pre></div><p>if the user tries to set a new value which is outside the range. If the range is nonperiodic (the default), values outside the range will be clipped.</p>
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">tf</td><td>true for a periodic range </td></tr>
</table>
</dd>
</dl>
</div>
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<a class="anchor" id="af9849c5c21412c7308cac6ad6a420e47"></a><!-- doxytag: member="QwtAbstractSlider::setPosition" ref="af9849c5c21412c7308cac6ad6a420e47" args="(const QPoint &)" -->
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<td class="memname">void QwtAbstractSlider::setPosition </td>
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<td class="paramtype">const QPoint & </td>
<td class="paramname"><em>p</em></td><td>)</td>
<td><code> [protected, virtual]</code></td>
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<p>Move the slider to a specified point, adjust the value and emit signals if necessary. </p>
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<a class="anchor" id="a43891011664b74b8e5454763a3f5ff21"></a><!-- doxytag: member="QwtAbstractSlider::setRange" ref="a43891011664b74b8e5454763a3f5ff21" args="(double vmin, double vmax, double vstep=0.0, int pagesize=1)" -->
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<td class="memname">void QwtDoubleRange::setRange </td>
<td>(</td>
<td class="paramtype">double </td>
<td class="paramname"><em>vmin</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">double </td>
<td class="paramname"><em>vmax</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">double </td>
<td class="paramname"><em>vstep</em> = <code>0.0</code>, </td>
</tr>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"><em>pageSize</em> = <code>1</code> </td>
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<td>)</td>
<td></td><td><code> [inherited]</code></td>
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<p>Specify range and step size. </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">vmin</td><td>lower boundary of the interval </td></tr>
<tr><td class="paramname">vmax</td><td>higher boundary of the interval </td></tr>
<tr><td class="paramname">vstep</td><td>step width </td></tr>
<tr><td class="paramname">pageSize</td><td>page size in steps </td></tr>
</table>
</dd>
</dl>
<dl class="warning"><dt><b>Warning:</b></dt><dd><ul>
<li>A change of the range changes the value if it lies outside the new range. The current value will *not* be adjusted to the new step raster. </li>
<li>vmax < vmin is allowed. </li>
<li>If the step size is left out or set to zero, it will be set to 1/100 of the interval length. </li>
<li>If the step size has an absurd value, it will be corrected to a better one. </li>
</ul>
</dd></dl>
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<a class="anchor" id="a9cc63283a2d4f0bcbb67fd331629a318"></a><!-- doxytag: member="QwtAbstractSlider::setReadOnly" ref="a9cc63283a2d4f0bcbb67fd331629a318" args="(bool)" -->
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<td class="memname">void QwtAbstractSlider::setReadOnly </td>
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<td class="paramtype">bool </td>
<td class="paramname"><em>readOnly</em></td><td>)</td>
<td><code> [virtual, slot]</code></td>
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<p>En/Disable read only mode</p>
<p>In read only mode the slider can't be controlled by mouse or keyboard.</p>
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">readOnly</td><td>Enables in case of true </td></tr>
</table>
</dd>
</dl>
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="class_qwt_abstract_slider.html#a040fd1fd03592c524314bf4b5539608d">isReadOnly()</a> </dd></dl>
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<a class="anchor" id="a29ed5fc66439def424a8ad773eea285d"></a><!-- doxytag: member="QwtAbstractSlider::setStep" ref="a29ed5fc66439def424a8ad773eea285d" args="(double)" -->
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<td class="memname">void QwtDoubleRange::setStep </td>
<td>(</td>
<td class="paramtype">double </td>
<td class="paramname"><em>vstep</em></td><td>)</td>
<td><code> [inherited]</code></td>
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<p>Change the step raster. </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">vstep</td><td>new step width </td></tr>
</table>
</dd>
</dl>
<dl class="warning"><dt><b>Warning:</b></dt><dd>The value will <em>not</em> be adjusted to the new step raster. </dd></dl>
<p>Reimplemented in <a class="el" href="class_qwt_counter.html#ab885e97d0071877dfefb73feb0adc0cd">QwtCounter</a>.</p>
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<a class="anchor" id="a91c03aada61745d8924f47319afefee1"></a><!-- doxytag: member="QwtAbstractSlider::setTracking" ref="a91c03aada61745d8924f47319afefee1" args="(bool enable)" -->
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<td class="memname">void QwtAbstractSlider::setTracking </td>
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<td class="paramtype">bool </td>
<td class="paramname"><em>enable</em></td><td>)</td>
<td></td>
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<p>Enables or disables tracking. </p>
<p>If tracking is enabled, the slider emits a <a class="el" href="class_qwt_abstract_slider.html#a6bc5c410cd56119c6ad50743c9a46af1" title="Notify a change of value.">valueChanged()</a> signal whenever its value changes (the default behaviour). If tracking is disabled, the value changed() signal will only be emitted if:</p>
<ul>
<li>
the user releases the mouse button and the value has changed or </li>
<li>
at the end of automatic scrolling.</li>
</ul>
<p>Tracking is enabled by default. </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">enable</td><td><code>true</code> (enable) or <code>false</code> (disable) tracking. </td></tr>
</table>
</dd>
</dl>
</div>
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<a class="anchor" id="a945ba36e1b8e20d362083f6737b0601d"></a><!-- doxytag: member="QwtAbstractSlider::setUpdateTime" ref="a945ba36e1b8e20d362083f6737b0601d" args="(int t)" -->
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<td class="memname">void QwtAbstractSlider::setUpdateTime </td>
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<td class="paramtype">int </td>
<td class="paramname"><em>t</em></td><td>)</td>
<td></td>
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<p>Specify the update interval for automatic scrolling. </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">t</td><td>update interval in milliseconds </td></tr>
</table>
</dd>
</dl>
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="class_qwt_abstract_slider.html#a4124aa3b1e462d57ea2693214e66da0b" title="Determine what to do when the user presses a mouse button.">getScrollMode()</a> </dd></dl>
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<a class="anchor" id="a79d99f14ebd47dfede8135845c90cedb"></a><!-- doxytag: member="QwtAbstractSlider::setValid" ref="a79d99f14ebd47dfede8135845c90cedb" args="(bool valid)" -->
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<td class="memname">void QwtAbstractSlider::setValid </td>
<td>(</td>
<td class="paramtype">bool </td>
<td class="paramname"><em>valid</em></td><td>)</td>
<td><code> [inline]</code></td>
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<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">valid</td><td>true/false </td></tr>
</table>
</dd>
</dl>
<dl class="see"><dt><b>See also:</b></dt><dd>QwtDblRange::isValid() </dd></dl>
<p>Reimplemented from <a class="el" href="class_qwt_double_range.html#a50a9c386663e170016a74cf8ee28ab8f">QwtDoubleRange</a>.</p>
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<a class="anchor" id="ac3713f8989b647cb79f0a5894991e36a"></a><!-- doxytag: member="QwtAbstractSlider::setValue" ref="ac3713f8989b647cb79f0a5894991e36a" args="(double val)" -->
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<td class="memname">void QwtAbstractSlider::setValue </td>
<td>(</td>
<td class="paramtype">double </td>
<td class="paramname"><em>val</em></td><td>)</td>
<td><code> [virtual, slot]</code></td>
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<p>Move the slider to a specified value. </p>
<p>This function can be used to move the slider to a value which is not an integer multiple of the step size. </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">val</td><td>new value </td></tr>
</table>
</dd>
</dl>
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="class_qwt_abstract_slider.html#a50ed1e265beaa1c8adbe718caa023e50" title="Set the slider's value to the nearest integer multiple of the step size.">fitValue()</a> </dd></dl>
<p>Reimplemented from <a class="el" href="class_qwt_double_range.html#af6a3aa74c970a2bef29f0c1af99720e8">QwtDoubleRange</a>.</p>
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<a class="anchor" id="ae59671d27931b545073e599a10967452"></a><!-- doxytag: member="QwtAbstractSlider::sliderMoved" ref="ae59671d27931b545073e599a10967452" args="(double value)" -->
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<td class="memname">void QwtAbstractSlider::sliderMoved </td>
<td>(</td>
<td class="paramtype">double </td>
<td class="paramname"><em>value</em></td><td>)</td>
<td><code> [signal]</code></td>
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<p>This signal is emitted when the user moves the slider with the mouse. </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">value</td><td>new value </td></tr>
</table>
</dd>
</dl>
</div>
</div>
<a class="anchor" id="afd92a0c79c113b3c5e9952d12cff80f5"></a><!-- doxytag: member="QwtAbstractSlider::sliderPressed" ref="afd92a0c79c113b3c5e9952d12cff80f5" args="()" -->
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<td class="memname">void QwtAbstractSlider::sliderPressed </td>
<td>(</td>
<td class="paramname"></td><td>)</td>
<td><code> [signal]</code></td>
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<p>This signal is emitted when the user presses the movable part of the slider (start ScrMouse Mode). </p>
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<a class="anchor" id="ab94184da7a029a5f586671251ff380ea"></a><!-- doxytag: member="QwtAbstractSlider::sliderReleased" ref="ab94184da7a029a5f586671251ff380ea" args="()" -->
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<td class="memname">void QwtAbstractSlider::sliderReleased </td>
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<td class="paramname"></td><td>)</td>
<td><code> [signal]</code></td>
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<p>This signal is emitted when the user releases the movable part of the slider. </p>
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<a class="anchor" id="a0cb8cc60548c10cb1d98e54387961967"></a><!-- doxytag: member="QwtAbstractSlider::step" ref="a0cb8cc60548c10cb1d98e54387961967" args="() const " -->
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<td class="memname">double QwtDoubleRange::step </td>
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<td class="paramname"></td><td>)</td>
<td> const<code> [inherited]</code></td>
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<dl class="return"><dt><b>Returns:</b></dt><dd>the step size </dd></dl>
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="class_qwt_double_range.html#a29ed5fc66439def424a8ad773eea285d" title="Change the step raster.">setStep()</a>, <a class="el" href="class_qwt_double_range.html#a43891011664b74b8e5454763a3f5ff21" title="Specify range and step size.">setRange()</a> </dd></dl>
<p>Reimplemented in <a class="el" href="class_qwt_counter.html#ab3496bdd6bdb093462bca588880d8c1b">QwtCounter</a>.</p>
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<a class="anchor" id="a86641f8755ed172ca4cf72d36df539ca"></a><!-- doxytag: member="QwtAbstractSlider::stepChange" ref="a86641f8755ed172ca4cf72d36df539ca" args="()" -->
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<td class="memname">void QwtDoubleRange::stepChange </td>
<td>(</td>
<td class="paramname"></td><td>)</td>
<td><code> [protected, virtual, inherited]</code></td>
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<p>Notify a change of the step size. </p>
<p>This virtual function is called whenever the step size changes. The default implementation does nothing. </p>
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<a class="anchor" id="ab648229c972d0c3258d30b0c43eb5efc"></a><!-- doxytag: member="QwtAbstractSlider::stopMoving" ref="ab648229c972d0c3258d30b0c43eb5efc" args="()" -->
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<td class="memname">void QwtAbstractSlider::stopMoving </td>
<td>(</td>
<td class="paramname"></td><td>)</td>
<td></td>
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<p>Stop updating if automatic scrolling is active. </p>
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<a class="anchor" id="a26f4d684524925891113d46ffe383b5d"></a><!-- doxytag: member="QwtAbstractSlider::timerEvent" ref="a26f4d684524925891113d46ffe383b5d" args="(QTimerEvent *e)" -->
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<td class="memname">void QwtAbstractSlider::timerEvent </td>
<td>(</td>
<td class="paramtype">QTimerEvent * </td>
<td class="paramname"><em>e</em></td><td>)</td>
<td><code> [protected, virtual]</code></td>
</tr>
</table>
</div>
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<p>Qt timer event </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">e</td><td>Timer event </td></tr>
</table>
</dd>
</dl>
</div>
</div>
<a class="anchor" id="a7777cf257c812579c4891512f1b6cad0"></a><!-- doxytag: member="QwtAbstractSlider::value" ref="a7777cf257c812579c4891512f1b6cad0" args="() const " -->
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<td class="memname">double QwtDoubleRange::value </td>
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<td class="paramname"></td><td>)</td>
<td> const<code> [inherited]</code></td>
</tr>
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<p>Returns the current value. </p>
<p>Reimplemented in <a class="el" href="class_qwt_counter.html#a121194fadd8cea929c1ac9509f27fe58">QwtCounter</a>.</p>
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<a class="anchor" id="a2f04dc51e4402b51fef3250bcc99dc7f"></a><!-- doxytag: member="QwtAbstractSlider::valueChange" ref="a2f04dc51e4402b51fef3250bcc99dc7f" args="()" -->
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<td class="memname">void QwtAbstractSlider::valueChange </td>
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<td><code> [protected, virtual]</code></td>
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<p>Notify change of value</p>
<p>This function can be reimplemented by derived classes in order to keep track of changes, i.e. repaint the widget. The default implementation emits a <a class="el" href="class_qwt_abstract_slider.html#a6bc5c410cd56119c6ad50743c9a46af1" title="Notify a change of value.">valueChanged()</a> signal if tracking is enabled. </p>
<p>Reimplemented from <a class="el" href="class_qwt_double_range.html#a1d50398342d6aa1d9cd86650ee29aff8">QwtDoubleRange</a>.</p>
<p>Reimplemented in <a class="el" href="class_qwt_dial.html#ad8803d79d9fbefdae55907728bb01894">QwtDial</a>, <a class="el" href="class_qwt_slider.html#a62380259b0831ad98a1b0ad011f32bea">QwtSlider</a>, and <a class="el" href="class_qwt_wheel.html#a0fa3d4f4189f7bb6ee0944cd30060eb5">QwtWheel</a>.</p>
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<a class="anchor" id="a6bc5c410cd56119c6ad50743c9a46af1"></a><!-- doxytag: member="QwtAbstractSlider::valueChanged" ref="a6bc5c410cd56119c6ad50743c9a46af1" args="(double value)" -->
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<td class="memname">void QwtAbstractSlider::valueChanged </td>
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<td class="paramtype">double </td>
<td class="paramname"><em>value</em></td><td>)</td>
<td><code> [signal]</code></td>
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<p>Notify a change of value. </p>
<p>In the default setting (tracking enabled), this signal will be emitted every time the value changes ( see <a class="el" href="class_qwt_abstract_slider.html#a91c03aada61745d8924f47319afefee1" title="Enables or disables tracking.">setTracking()</a> ). </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">value</td><td>new value </td></tr>
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<a class="anchor" id="a25d5c9fe00c81e310304461fa6e8ec97"></a><!-- doxytag: member="QwtAbstractSlider::wheelEvent" ref="a25d5c9fe00c81e310304461fa6e8ec97" args="(QWheelEvent *e)" -->
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<td class="memname">void QwtAbstractSlider::wheelEvent </td>
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<td class="paramtype">QWheelEvent * </td>
<td class="paramname"><em>e</em></td><td>)</td>
<td><code> [protected, virtual]</code></td>
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<p>Wheel Event handler </p>
<dl><dt><b>Parameters:</b></dt><dd>
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<tr><td class="paramname">e</td><td>Whell event </td></tr>
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</dd>
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