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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><html><head><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
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<h1 align=center>QSlider Class Reference</h1><br clear="all">
<p>
The QSlider widget provides a vertical or horizontal slider.
<a href="#details">More...</a>
<p>
<code>#include <<a href="qslider-h.html">qslider.h</a>></code>
<p>
Inherits <a href="qrangecontrol.html">QRangeControl</a> and <a href="qwidget.html">QWidget</a>.
<p><a href="qslider-members.html">List of all member functions.</a>
<h2>Public Members</h2>
<ul>
<li><div class="fn">enum<a href="#TickSetting"><b>TickSetting</b></a>{NoMarks=0, Above=1, Left=Above, Below=2, Right=Below, Both=3}</div>
<li><div class="fn"><a href="#91879d"><b>QSlider</b></a>(QWidget*parent, constchar*name=0)</div>
<li><div class="fn"><a href="#09987e"><b>QSlider</b></a>(Orientation, QWidget*parent, constchar*name=0)</div>
<li><div class="fn"><a href="#29b312"><b>QSlider</b></a>(intminValue, intmaxValue, intpageStep, intvalue, Orientation, QWidget*parent, constchar*name=0)</div>
<li><div class="fn">virtualvoid<a href="#7c6fad"><b>setOrientation</b></a>(Orientation)</div>
<li><div class="fn">Orientation<a href="#646dac"><b>orientation</b></a>()const</div>
<li><div class="fn">virtualvoid<a href="#4adf7d"><b>setTracking</b></a>(boolenable)</div>
<li><div class="fn">bool<a href="#aefda9"><b>tracking</b></a>()const</div>
<li><div class="fn">virtualvoid<a href="#f82be6"><b>setPalette</b></a>(constQPalette&)</div>
<li><div class="fn">QRect<a href="#fef809"><b>sliderRect</b></a>()const</div>
<li><div class="fn">virtualvoid<a href="#0c633e"><b>setTickmarks</b></a>(TickSetting)</div>
<li><div class="fn">TickSetting<a href="#145e2a"><b>tickmarks</b></a>()const</div>
<li><div class="fn">virtualvoid<a href="#c111f7"><b>setTickInterval</b></a>(int)</div>
<li><div class="fn">int<a href="#d255aa"><b>tickInterval</b></a>()const</div>
<li><div class="fn">void<a href="#d27d34"><b>setMinValue</b></a>(int)</div>
<li><div class="fn">void<a href="#11c797"><b>setMaxValue</b></a>(int)</div>
<li><div class="fn">void<a href="#69c457"><b>setLineStep</b></a>(int)</div>
<li><div class="fn">void<a href="#38a5f2"><b>setPageStep</b></a>(int)</div>
</ul>
<h2>Public Slots</h2>
<ul>
<li><div class="fn">virtualvoid<a href="#a03234"><b>setValue</b></a>(int)</div>
<li><div class="fn">void<a href="#f8da10"><b>addStep</b></a>()</div>
<li><div class="fn">void<a href="#54db92"><b>subtractStep</b></a>()</div>
</ul>
<h2>Signals</h2>
<ul>
<li><div class="fn">void<a href="#ec1dd5"><b>valueChanged</b></a>(intvalue)</div>
<li><div class="fn">void<a href="#2d9c73"><b>sliderPressed</b></a>()</div>
<li><div class="fn">void<a href="#eae8fb"><b>sliderMoved</b></a>(intvalue)</div>
<li><div class="fn">void<a href="#5c3ef1"><b>sliderReleased</b></a>()</div>
</ul>
<h2>Protected Members</h2>
<ul>
<li><div class="fn">virtualvoid<a href="#867b6f"><b>updateMask</b></a>()</div>
<li><div class="fn">virtualvoid<a href="#70a497"><b>valueChange</b></a>()</div>
<li><div class="fn">virtualvoid<a href="#cb0cf3"><b>rangeChange</b></a>()</div>
<li><div class="fn">virtualvoid<a href="#904afa"><b>paintSlider</b></a>(QPainter*, constQColorGroup&, constQRect&)</div>
<li><div class="fn">void<a href="#381bf6"><b>drawTicks</b></a>(QPainter*, constQColorGroup&, int, int, int=1)const</div>
<li><div class="fn">voiddrawWinGroove(QPainter*, QCOORD)<em>(obsolete)</em></div>
<li><div class="fn">voiddrawTicks(QPainter*, int, int, int=1)const<em>(obsolete)</em></div>
<li><div class="fn">virtualint<a href="#d04460"><b>thickness</b></a>()const</div>
</ul>
<h2>Properties</h2>
<table border=1 cellpadding=3 cellspacing=0>
<tr><th>Type<th>Name<th>READ<th>WRITE<th>Options
<tr><td>int<td>minValue<td>minValue<td>setMinValue<td>
<tr><td>int<td>maxValue<td>maxValue<td>setMaxValue<td>
<tr><td>int<td>lineStep<td>lineStep<td>setLineStep<td>
<tr><td>int<td>pageStep<td>pageStep<td>setPageStep<td>
<tr><td>int<td>value<td>value<td>setValue<td>
<tr><td>bool<td>tracking<td>tracking<td>setTracking<td>
<tr><td>Orientation<td>orientation<td>orientation<td>setOrientation<td>
<tr><td>TickSetting<td>tickmarks<td>tickmarks<td>setTickmarks<td>
<tr><td>int<td>tickInterval<td>tickInterval<td>setTickInterval<td>
</table>
<hr><h2><a name="details"></a>Detailed Description</h2>
The QSlider widget provides a vertical or horizontal slider.
<p>
The slider is the classic widget for controlling a bounded value.
It lets the user move a slider along a horizontal or vertical
groove, and translates the slider's position into an integer value
in the legal range.
<p>QSlider inherits <a href="qrangecontrol.html">QRangeControl</a>, which provides the "integer" side of
the slider. <a href="qrangecontrol.html#f2409c">setRange</a>() and <a href="#7b285c">value</a>() are likely to be used by
practically all slider users; see the <a href="qrangecontrol.html">QRangeControl</a> documentation
for information about the many other functions that class provides.
<p>The main functions offered by the slider itself are tickmark and
orientation control; you can use <a href="#0c633e">setTickmarks</a>() to indicate where
you want the tickmarks to be, <a href="#c111f7">setTickInterval</a>() to indicate how many
of them you want, and <a href="#7c6fad">setOrientation</a>() to indicate whether the
slider is to e horizontal or vertical.
<p>A slider has a default <a href="qwidget.html#3d478d">focusPolicy</a>() of <em>WeakWheelFocus,</em> i.e. it
accepts focus on Tab and by using the mouse wheel, and a
suitable keyboard interface.
<p><img src=qslider-m.png> <img src=qslider-w.png>
<p>See also <a href="qscrollbar.html">QScrollBar</a>, <a href="qspinbox.html">QSpinBox</a> and <a href="guibooks.html#fowler">GUI Design Handbook: Slider</a>
<p>Examples:
<a href="xform-xform-cpp.html#QSlider">xform/xform.cpp</a>
<hr><h2>Member Type Documentation</h2>
<h3 class="fn"><a name="TickSetting">QSlider::TickSetting</a></h3>
This enum specifies where the tick marks are to be drawn, relative
to the slider's groove and the handle the user moves. The possible
values are <code>NoMarks</code> (no tickmarks are drawn), <code>Above, Below, Left, Right</code> and <code>Both.</code>
<p><code>NoMarks</code> means to not draw any tickmarks; <code>Both</code> means to draw
tickmarks on both sides of the groove. <code>Above</code> and <code>Below</code> mean
to draw tickmarks above and below the (horizontal) slider. <code>Left</code>
and <code>Right</code> mean to draw tickmarks to the left and right of the
(vertical) slider.
<hr><h2>Member Function Documentation</h2>
<h3 class="fn"><a name="09987e"></a>QSlider::QSlider(<a href="qt.html#Orientation">Orientation</a>orientation, <a href="qwidget.html">QWidget</a>*parent, constchar*name=0)</h3>
<p>Constructs a slider.
<p>The <em>orientation</em> must be QSlider::Vertical or QSlider::Horizontal.
<p>The <em>parent</em> and <em>name</em> arguments are sent to the <a href="qwidget.html">QWidget</a> constructor.
<h3 class="fn"><a name="91879d"></a>QSlider::QSlider(<a href="qwidget.html">QWidget</a>*parent, constchar*name=0)</h3>
<p>Constructs a vertical slider.
<p>The <em>parent</em> and <em>name</em> arguments are sent to the <a href="qwidget.html">QWidget</a> constructor.
<h3 class="fn"><a name="29b312"></a>QSlider::QSlider(intminValue, intmaxValue, intpageStep, intvalue, <a href="qt.html#Orientation">Orientation</a>orientation, <a href="qwidget.html">QWidget</a>*parent, constchar*name=0)</h3>
<p>Constructs a slider.
<p>Arguments:
<ul>
<li><em>minValue</em> is the minimum slider value.
<li><em>maxValue</em> is the maximum slider value.
<li><em>step</em> is the page step value.
<li><em>value</em> is the initial value.
<li><em>orientation</em> must be QSlider::Vertical or QSlider::Horizontal.
</ul>
The <em>parent</em> and <em>name</em> arguments are sent to the <a href="qwidget.html">QWidget</a> constructor.
<h3 class="fn">void<a name="f8da10"></a>QSlider::addStep() <code>[slot]</code></h3>
<p>Moves the slider one <a href="#66a537">pageStep</a>() upwards.
<h3 class="fn">void<a name="381bf6"></a>QSlider::drawTicks(<a href="qpainter.html">QPainter</a>*p, const<a href="qcolorgroup.html">QColorGroup</a>&g, intdist, intw, inti=1)const <code>[protected]</code></h3>
<p>Using <em>p,</em> draws tickmarks at a distance of <em>dist</em> from the edge
of the widget, using <em>w</em> pixels and with an interval of <em>i.</em>
<p>Setting the colorgroup is useful to reuse the code to draw a mask if
the slider supports transparceny.
<p>See also <a href="qwidget.html#efa8f9">setAutoMask</a>() and <a href="#867b6f">updateMask</a>().
<h3 class="fn">void<a name="5c6030"></a>QSlider::drawTicks(<a href="qpainter.html">QPainter</a>*p, intdist, intw, inti=1)const <code>[protected]</code></h3>
<p><b>This function is obsolete.</b> It is provided to keep old source working, and will probably be removed in a future version of Qt. We strongly advise against using it in new code.<p>
\overload
<p>Do not reimplement this function, it's only there for compatibility
reasons. It simply calls the other version with <a href="qwidget.html#d92bf4">colorGroup</a>() as the
second argument.
<h3 class="fn">void<a name="fea6af"></a>QSlider::drawWinGroove(<a href="qpainter.html">QPainter</a>*p, QCOORDc) <code>[protected]</code></h3>
<p><b>This function is obsolete.</b> It is provided to keep old source working, and will probably be removed in a future version of Qt. We strongly advise against using it in new code.<p>
<p>Draws the "groove" on which the slider moves, using the painter <em>p. c</em> gives the distance from the top (or left) edge of the widget to
the center of the groove.
<h3 class="fn">void<a name="5be196"></a>QSlider::focusInEvent(<a href="qfocusevent.html">QFocusEvent</a>*e) <code>[virtualprotected]</code></h3>
<p>Reimplemented for internal reasons; the API is not affected.
<p>Reimplemented from <a href="qwidget.html#21a4b8">QWidget.</a>
<h3 class="fn">void<a name="062221"></a>QSlider::focusOutEvent(<a href="qfocusevent.html">QFocusEvent</a>*e) <code>[virtualprotected]</code></h3>
<p>Reimplemented for internal reasons; the API is not affected.
<p>Reimplemented from <a href="qwidget.html#de664a">QWidget.</a>
<h3 class="fn">void<a name="c84ef2"></a>QSlider::keyPressEvent(<a href="qkeyevent.html">QKeyEvent</a>*e) <code>[virtualprotected]</code></h3>
<p>Reimplemented for internal reasons; the API is not affected.
<p>Reimplemented from <a href="qwidget.html#0a4482">QWidget.</a>
<h3 class="fn">int<a name="50bb6e"></a>QSlider::lineStep()const</h3>
<p>Reimplemented for internal reasons; the API is not affected.
<h3 class="fn">int<a name="b4a4db"></a>QSlider::maxValue()const</h3>
<p>Reimplemented for internal reasons; the API is not affected.
<h3 class="fn">int<a name="8ce483"></a>QSlider::minValue()const</h3>
<p>Reimplemented for internal reasons; the API is not affected.
<h3 class="fn"><a href="qsize.html">QSize</a><a name="dfd60a"></a>QSlider::minimumSizeHint()const <code>[virtual]</code></h3>
<p>Reimplemented for internal reasons; the API is not affected.
<p>Reimplemented from <a href="qwidget.html#553e08">QWidget.</a>
<h3 class="fn">void<a name="5ccce3"></a>QSlider::mouseMoveEvent(<a href="qmouseevent.html">QMouseEvent</a>*e) <code>[virtualprotected]</code></h3>
<p>Reimplemented for internal reasons; the API is not affected.
<p>Reimplemented from <a href="qwidget.html#a51d92">QWidget.</a>
<h3 class="fn">void<a name="baae36"></a>QSlider::mousePressEvent(<a href="qmouseevent.html">QMouseEvent</a>*e) <code>[virtualprotected]</code></h3>
<p>Reimplemented for internal reasons; the API is not affected.
<p>Reimplemented from <a href="qwidget.html#2ecc04">QWidget.</a>
<h3 class="fn">void<a name="600888"></a>QSlider::mouseReleaseEvent(<a href="qmouseevent.html">QMouseEvent</a>*) <code>[virtualprotected]</code></h3>
<p>Reimplemented for internal reasons; the API is not affected.
<p>Reimplemented from <a href="qwidget.html#9aa77f">QWidget.</a>
<h3 class="fn"><a href="qt.html#Orientation">Orientation</a><a name="646dac"></a>QSlider::orientation()const</h3>
<p>Returns the slider orientation; QSlider::Vertical or
QSlider::Horizontal.
<p>See also <a href="#7c6fad">setOrientation</a>().
<h3 class="fn">int<a name="66a537"></a>QSlider::pageStep()const</h3>
<p>Reimplemented for internal reasons; the API is not affected.
<h3 class="fn">void<a name="d7e45a"></a>QSlider::paintEvent(<a href="qpaintevent.html">QPaintEvent</a>*) <code>[virtualprotected]</code></h3>
<p>Reimplemented for internal reasons; the API is not affected.
<p>Reimplemented from <a href="qwidget.html#e3d821">QWidget.</a>
<h3 class="fn">void<a name="904afa"></a>QSlider::paintSlider(<a href="qpainter.html">QPainter</a>*p, const<a href="qcolorgroup.html">QColorGroup</a>&g, const<a href="qrect.html">QRect</a>&r) <code>[virtualprotected]</code></h3>
<p>Paints the slider button using painter <em>p</em> with size, a colorgroup
and position given by <em>r.</em> Reimplement this function to change the
look of the slider button.
<p>Setting the colorgroup is useful to reuse the code to draw a mask if
the slider supports transparceny.
<p>See also <a href="qwidget.html#efa8f9">setAutoMask</a>() and <a href="#867b6f">updateMask</a>().
<h3 class="fn">void<a name="cb0cf3"></a>QSlider::rangeChange() <code>[virtualprotected]</code></h3>
<p>Implements the virtual <a href="qrangecontrol.html">QRangeControl</a> function.
<p>Reimplemented from <a href="qrangecontrol.html#a849c2">QRangeControl.</a>
<h3 class="fn">void<a name="7d7415"></a>QSlider::resizeEvent(<a href="qresizeevent.html">QResizeEvent</a>*) <code>[virtualprotected]</code></h3>
<p>Reimplemented for internal reasons; the API is not affected.
<p>Reimplemented from <a href="qwidget.html#7d375f">QWidget.</a>
<h3 class="fn">void<a name="69c457"></a>QSlider::setLineStep(inti)</h3>
<p>Sets the line step to <em>i.</em>
<p>Calls the virtual <a href="qrangecontrol.html#e0aaf5">stepChange</a>() function if the new line step is
different from the previous setting.
<p>See also <a href="#50bb6e">lineStep</a>(), <a href="qrangecontrol.html#1b6f6d">QRangeControl::setSteps</a>(), <a href="#38a5f2">setPageStep</a>() and <a href="qrangecontrol.html#f2409c">setRange</a>().
<h3 class="fn">void<a name="11c797"></a>QSlider::setMaxValue(inti)</h3>
<p>A convenience function which just calls
<a href="qrangecontrol.html#f2409c">setRange</a>( <a href="#8ce483">minValue</a>(), i )
<p>See also <a href="qrangecontrol.html#f2409c">setRange</a>().
<h3 class="fn">void<a name="d27d34"></a>QSlider::setMinValue(inti)</h3>
<p>A convenience function which just calls
<a href="qrangecontrol.html#f2409c">setRange</a>( i, <a href="#b4a4db">maxValue</a>() )
<p>See also <a href="qrangecontrol.html#f2409c">setRange</a>().
<h3 class="fn">void<a name="7c6fad"></a>QSlider::setOrientation(<a href="qt.html#Orientation">Orientation</a>orientation) <code>[virtual]</code></h3>
<p>Sets the slider orientation. The <em>orientation</em> must be
QSlider::Vertical or QSlider::Horizontal.
<p>See also <a href="#646dac">orientation</a>().
<h3 class="fn">void<a name="38a5f2"></a>QSlider::setPageStep(inti)</h3>
<p>Sets the page step to <em>i.</em>
<p>Calls the virtual <a href="qrangecontrol.html#e0aaf5">stepChange</a>() function if the new page step is
different from the previous setting.
<p>See also <a href="#66a537">pageStep</a>(), <a href="qrangecontrol.html#1b6f6d">QRangeControl::setSteps</a>(), <a href="#69c457">setLineStep</a>() and <a href="qrangecontrol.html#f2409c">setRange</a>().
<h3 class="fn">void<a name="f82be6"></a>QSlider::setPalette(const<a href="qpalette.html">QPalette</a>&p) <code>[virtual]</code></h3>
<p>Reimplements the virtual function <a href="qwidget.html#d7e4b9">QWidget::setPalette</a>().
<p>Sets the background color to the mid color for Motif style sliders.
<h3 class="fn">void<a name="c111f7"></a>QSlider::setTickInterval(inti) <code>[virtual]</code></h3>
<p>Sets the interval between tickmarks to <em>i.</em> This is a value interval,
not a pixel interval. If <em>i</em> is 0, the slider
will choose between <a href="#50bb6e">lineStep</a>() and <a href="#66a537">pageStep</a>(). The initial value of
<a href="#d255aa">tickInterval</a>() is 0.
<p>See also <a href="#d255aa">tickInterval</a>(), <a href="qrangecontrol.html#7c7645">QRangeControl::lineStep</a>() and <a href="qrangecontrol.html#082f80">QRangeControl::pageStep</a>().
<h3 class="fn">void<a name="0c633e"></a>QSlider::setTickmarks(<a href="qslider.html#TickSetting">TickSetting</a>s)</h3>
<p>Sets the way tickmarks are displayed by the slider. <em>s</em> can take
the following values:
<ul>
<li> <code>NoMarks</code>
<li> <code>Above</code>
<li> <code>Left</code>
<li> <code>Below</code>
<li> <code>Right</code>
<li> <code>Both</code>
</ul>
The initial value is <code>NoMarks.</code>
<p>See also <a href="#145e2a">tickmarks</a>() and <a href="#c111f7">setTickInterval</a>().
<h3 class="fn">void<a name="4adf7d"></a>QSlider::setTracking(boolenable) <code>[virtual]</code></h3>
<p>Enables slider tracking if <em>enable</em> is TRUE, or disables tracking
if <em>enable</em> is FALSE.
<p>If tracking is enabled (default), the slider emits the
<a href="#ec1dd5">valueChanged</a>() signal whenever the slider is being dragged. If
tracking is disabled, the slider emits the valueChanged() signal
when the user releases the mouse button (unless the value happens to
be the same as before).
<p>See also <a href="#aefda9">tracking</a>().
<h3 class="fn">void<a name="a03234"></a>QSlider::setValue(intvalue) <code>[virtualslot]</code></h3>
<p>Makes <a href="qrangecontrol.html#bc1c05">QRangeControl::setValue</a>() available as a slot.
<p>Examples:
<a href="xform-xform-cpp.html#setValue">xform/xform.cpp</a>
<h3 class="fn"><a href="qsize.html">QSize</a><a name="76e58f"></a>QSlider::sizeHint()const <code>[virtual]</code></h3>
<p>Reimplemented for internal reasons; the API is not affected.
<p>Reimplemented from <a href="qwidget.html#4511d1">QWidget.</a>
<h3 class="fn"><a href="qsizepolicy.html">QSizePolicy</a><a name="ab8a04"></a>QSlider::sizePolicy()const <code>[virtual]</code></h3>
<p>Reimplemented for internal reasons; the API is not affected.
<p>Reimplemented from <a href="qwidget.html#23726d">QWidget.</a>
<h3 class="fn">void<a name="eae8fb"></a>QSlider::sliderMoved(intvalue) <code>[signal]</code></h3>
<p>This signal is emitted when the slider is dragged, with the
new slider value as an argument.
<h3 class="fn">void<a name="2d9c73"></a>QSlider::sliderPressed() <code>[signal]</code></h3>
<p>This signal is emitted when the user presses the slider with the mouse.
<h3 class="fn"><a href="qrect.html">QRect</a><a name="fef809"></a>QSlider::sliderRect()const</h3>
<p>Returns the slider handle rectangle. (The actual moving-around thing.).
<h3 class="fn">void<a name="5c3ef1"></a>QSlider::sliderReleased() <code>[signal]</code></h3>
<p>This signal is emitted when the user releases the slider with the mouse.
<h3 class="fn">void<a name="40a71b"></a>QSlider::styleChange(<a href="qstyle.html">QStyle</a>&old) <code>[virtualprotected]</code></h3>
<p>Reimplemented for internal reasons; the API is not affected.
<p>Reimplemented from <a href="qwidget.html#5e2e23">QWidget.</a>
<h3 class="fn">void<a name="54db92"></a>QSlider::subtractStep() <code>[slot]</code></h3>
<p>Moves the slider one <a href="#66a537">pageStep</a>() downwards.
<h3 class="fn">int<a name="d04460"></a>QSlider::thickness()const <code>[virtualprotected]</code></h3>
<p>Returns the number of pixels to use for the business part of the
slider (i.e. the non-tickmark portion). The remaining space is shared
equally between the tickmark regions. This function and <a href="#76e58f">sizeHint</a>()
are closely related; if you change one, you almost certainly
have to change the other.
<h3 class="fn">int<a name="d255aa"></a>QSlider::tickInterval()const</h3>
<p>Returns the interval between tickmarks. Returns 0 if the slider
chooses between <a href="#66a537">pageStep</a>() and <a href="#50bb6e">lineStep</a>().
<p>See also <a href="#c111f7">setTickInterval</a>().
<h3 class="fn">QSlider::TickSetting<a name="145e2a"></a>QSlider::tickmarks()const</h3>
<p>Returns the tickmark settings for this slider.
<p>See also <a href="#0c633e">setTickmarks</a>().
<h3 class="fn">bool<a name="aefda9"></a>QSlider::tracking()const</h3>
<p>Returns TRUE if tracking is enabled, or FALSE if tracking is disabled.
<p>Tracking is initially enabled.
<p>See also <a href="#4adf7d">setTracking</a>().
<h3 class="fn">void<a name="867b6f"></a>QSlider::updateMask() <code>[virtualprotected]</code></h3>
<p>Reimplementation of <a href="qwidget.html#b8a07f">QWidget::updateMask</a>(). Draws the mask of the
slider when transparency is required.
<p>See also <a href="qwidget.html#efa8f9">QWidget::setAutoMask</a>().
<p>Reimplemented from <a href="qwidget.html#b8a07f">QWidget.</a>
<h3 class="fn">int<a name="7b285c"></a>QSlider::value()const</h3>
<p>Reimplemented for internal reasons; the API is not affected.
<p>Examples:
<a href="xform-xform-cpp.html#value">xform/xform.cpp</a>
<h3 class="fn">void<a name="70a497"></a>QSlider::valueChange() <code>[virtualprotected]</code></h3>
<p>Implements the virtual <a href="qrangecontrol.html">QRangeControl</a> function.
<p>Reimplemented from <a href="qrangecontrol.html#671dc3">QRangeControl.</a>
<h3 class="fn">void<a name="ec1dd5"></a>QSlider::valueChanged(intvalue) <code>[signal]</code></h3>
<p>This signal is emitted when the slider value is changed, with the
new slider value as an argument.
<h3 class="fn">void<a name="5eae2c"></a>QSlider::wheelEvent(<a href="qwheelevent.html">QWheelEvent</a>*e) <code>[virtualprotected]</code></h3>
<p>Reimplemented for internal reasons; the API is not affected.
<p>Reimplemented from <a href="qwidget.html#6f6c80">QWidget.</a>
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