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<td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>QSlider Class Reference</h1>

<p>The QSlider widget provides a vertical or horizontal slider.
<a href="#details">More...</a>
<p><tt>#include &lt;<a href="qslider-h.html">qslider.h</a>&gt;</tt>
<p>Inherits <a href="qwidget.html">QWidget</a> and <a href="qrangecontrol.html">QRangeControl</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-enum"><b>TickSetting</b></a> { NoMarks = 0, Above = 1, Left = Above, Below = 2, Right = Below, Both = 3 }</div></li>
<li><div class=fn><a href="#QSlider"><b>QSlider</b></a> ( QWidget&nbsp;*&nbsp;parent, const&nbsp;char&nbsp;*&nbsp;name = 0 )</div></li>
<li><div class=fn><a href="#QSlider-2"><b>QSlider</b></a> ( Orientation&nbsp;orientation, QWidget&nbsp;*&nbsp;parent, const&nbsp;char&nbsp;*&nbsp;name = 0 )</div></li>
<li><div class=fn><a href="#QSlider-3"><b>QSlider</b></a> ( int&nbsp;minValue, int&nbsp;maxValue, int&nbsp;pageStep, int&nbsp;value, Orientation&nbsp;orientation, QWidget&nbsp;*&nbsp;parent, const&nbsp;char&nbsp;*&nbsp;name = 0 )</div></li>
<li><div class=fn>virtual void <a href="#setOrientation"><b>setOrientation</b></a> ( Orientation )</div></li>
<li><div class=fn>Orientation <a href="#orientation"><b>orientation</b></a> () const</div></li>
<li><div class=fn>virtual void <a href="#setTracking"><b>setTracking</b></a> ( bool&nbsp;enable )</div></li>
<li><div class=fn>bool <a href="#tracking"><b>tracking</b></a> () const</div></li>
<li><div class=fn>virtual void <a href="#setPalette"><b>setPalette</b></a> ( const&nbsp;QPalette&nbsp;&amp;&nbsp;p )</div></li>
<li><div class=fn>int <a href="#sliderStart"><b>sliderStart</b></a> () const</div></li>
<li><div class=fn>QRect <a href="#sliderRect"><b>sliderRect</b></a> () const</div></li>
<li><div class=fn>virtual void <a href="#setTickmarks"><b>setTickmarks</b></a> ( TickSetting )</div></li>
<li><div class=fn>TickSetting <a href="#tickmarks"><b>tickmarks</b></a> () const</div></li>
<li><div class=fn>virtual void <a href="#setTickInterval"><b>setTickInterval</b></a> ( int )</div></li>
<li><div class=fn>int <a href="#tickInterval"><b>tickInterval</b></a> () const</div></li>
<li><div class=fn>int <a href="#minValue"><b>minValue</b></a> () const</div></li>
<li><div class=fn>int <a href="#maxValue"><b>maxValue</b></a> () const</div></li>
<li><div class=fn>void <a href="#setMinValue"><b>setMinValue</b></a> ( int )</div></li>
<li><div class=fn>void <a href="#setMaxValue"><b>setMaxValue</b></a> ( int )</div></li>
<li><div class=fn>int <a href="#lineStep"><b>lineStep</b></a> () const</div></li>
<li><div class=fn>int <a href="#pageStep"><b>pageStep</b></a> () const</div></li>
<li><div class=fn>void <a href="#setLineStep"><b>setLineStep</b></a> ( int )</div></li>
<li><div class=fn>void <a href="#setPageStep"><b>setPageStep</b></a> ( int )</div></li>
<li><div class=fn>int <a href="#value"><b>value</b></a> () const</div></li>
</ul>
<h2>Public Slots</h2>
<ul>
<li><div class=fn>virtual void <a href="#setValue"><b>setValue</b></a> ( int )</div></li>
<li><div class=fn>void <a href="#addStep"><b>addStep</b></a> ()</div></li>
<li><div class=fn>void <a href="#subtractStep"><b>subtractStep</b></a> ()</div></li>
</ul>
<h2>Signals</h2>
<ul>
<li><div class=fn>void <a href="#valueChanged"><b>valueChanged</b></a> ( int&nbsp;value )</div></li>
<li><div class=fn>void <a href="#sliderPressed"><b>sliderPressed</b></a> ()</div></li>
<li><div class=fn>void <a href="#sliderMoved"><b>sliderMoved</b></a> ( int&nbsp;value )</div></li>
<li><div class=fn>void <a href="#sliderReleased"><b>sliderReleased</b></a> ()</div></li>
</ul>
<h2>Important Inherited Members</h2>
<ul>
<li><div class=fn>void <a href="#setRange"><b>setRange</b></a> ( int&nbsp;minValue, int&nbsp;maxValue )</div></li>
</ul>
<h2>Properties</h2>
<ul>
<li><div class=fn>int <a href="#lineStep-prop"><b>lineStep</b></a>&nbsp;- the current line step</div></li>
<li><div class=fn>int <a href="#maxValue-prop"><b>maxValue</b></a>&nbsp;- the current maximum value of the slider</div></li>
<li><div class=fn>int <a href="#minValue-prop"><b>minValue</b></a>&nbsp;- the current minimum value of the slider</div></li>
<li><div class=fn>Orientation <a href="#orientation-prop"><b>orientation</b></a>&nbsp;- the orientation of the slider</div></li>
<li><div class=fn>int <a href="#pageStep-prop"><b>pageStep</b></a>&nbsp;- the current page step</div></li>
<li><div class=fn>int <a href="#tickInterval-prop"><b>tickInterval</b></a>&nbsp;- the interval between tickmarks</div></li>
<li><div class=fn>TickSetting <a href="#tickmarks-prop"><b>tickmarks</b></a>&nbsp;- the tickmark settings for this slider</div></li>
<li><div class=fn>bool <a href="#tracking-prop"><b>tracking</b></a>&nbsp;- whether slider tracking is enabled</div></li>
<li><div class=fn>int <a href="#value-prop"><b>value</b></a>&nbsp;- the current slider value</div></li>
</ul>
<h2>Protected Members</h2>
<ul>
<li><div class=fn>virtual void <a href="#valueChange"><b>valueChange</b></a> ()</div></li>
<li><div class=fn>virtual void <a href="#rangeChange"><b>rangeChange</b></a> ()</div></li>
</ul>
<hr><a name="details"></a><h2>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
within the legal range.
<p> QSlider inherits <a href="qrangecontrol.html">QRangeControl</a>, which provides the "integer" side of
the slider.  <a href="qrangecontrol.html#setRange">setRange</a>() and <a href="#value">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="#setTickmarks">setTickmarks</a>() to indicate where
you want the tickmarks to be, <a href="#setTickInterval">setTickInterval</a>() to indicate how many
of them you want and <a href="#setOrientation">setOrientation</a>() to indicate whether the
slider is to be horizontal or vertical.
<p> A slider has a default <a href="qwidget.html#focusPolicy">focusPolicy</a>() of <tt>WeakWheelFocus</tt>, i.e. it
accepts focus on Tab and uses the mouse wheel and a
suitable keyboard interface.
<p> <img src=qslider-m.png> <img src=qslider-w.png>
<p> 
<p> <p>See also <a href="qscrollbar.html">QScrollBar</a>, <a href="qspinbox.html">QSpinBox</a>, <a href="guibooks.html#fowler">GUI Design Handbook: Slider</a> and <a href="basic.html">Basic Widgets</a>.

<hr><h2>Member Type Documentation</h2>
<h3 class=fn><a name="TickSetting-enum"></a>QSlider::TickSetting</h3> 
<p> This enum specifies where the tickmarks are to be drawn relative
to the slider's groove and the handle the user moves.  The possible
values are:
<ul>
<li><tt>QSlider::NoMarks</tt> - do not draw any tickmarks.
<li><tt>QSlider::Both</tt> - draw tickmarks on both sides of the groove.
<li><tt>QSlider::Above</tt> - draw tickmarks above the (horizontal) slider
<li><tt>QSlider::Below</tt> - draw tickmarks below the (horizontal) slider
<li><tt>QSlider::Left</tt> - draw tickmarks to the left of the (vertical) slider
<li><tt>QSlider::Right</tt> - draw tickmarks to the right of the (vertical) slider
</ul>
<hr><h2>Member Function Documentation</h2>
<h3 class=fn><a name="QSlider"></a>QSlider::QSlider ( <a href="qwidget.html">QWidget</a>&nbsp;*&nbsp;parent, const&nbsp;char&nbsp;*&nbsp;name = 0 )
</h3>
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="QSlider-2"></a>QSlider::QSlider ( <a href="qt.html#Orientation-enum">Orientation</a>&nbsp;orientation, <a href="qwidget.html">QWidget</a>&nbsp;*&nbsp;parent, const&nbsp;char&nbsp;*&nbsp;name = 0 )
</h3>
Constructs a slider.
<p> The <em>orientation</em> must be <a href="qt.html#Orientation-enum">Qt::Vertical</a> or <a href="qt.html#Orientation-enum">Qt::Horizontal</a>.
<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="QSlider-3"></a>QSlider::QSlider ( int&nbsp;minValue, int&nbsp;maxValue, int&nbsp;pageStep, int&nbsp;value, <a href="qt.html#Orientation-enum">Orientation</a>&nbsp;orientation, <a href="qwidget.html">QWidget</a>&nbsp;*&nbsp;parent, const&nbsp;char&nbsp;*&nbsp;name = 0 )
</h3>  Constructs a slider whose value can never be smaller than <em>minValue</em> or greater than <em>maxValue</em>, whose page step size is
<em>pageStep</em> and whose value is initially <em>value</em> (which is
guaranteed to be in range using <a href="qrangecontrol.html#bound">bound</a>()).
<p> If <em>orientation</em> is Qt::Vertical the slider is vertical and if it is
Qt::Horizontal the slider is 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>void <a name="addStep"></a>QSlider::addStep ()<tt> [slot]</tt>
</h3>
Moves the slider one <a href="#pageStep">pageStep</a>() up or right.

<h3 class=fn>int <a name="lineStep"></a>QSlider::lineStep () const
</h3><p>Returns the current line step.
See the <a href="qslider.html#lineStep-prop">"lineStep"</a> property for details.
<h3 class=fn>int <a name="maxValue"></a>QSlider::maxValue () const
</h3><p>Returns the current maximum value of the slider.
See the <a href="qslider.html#maxValue-prop">"maxValue"</a> property for details.
<h3 class=fn>int <a name="minValue"></a>QSlider::minValue () const
</h3><p>Returns the current minimum value of the slider.
See the <a href="qslider.html#minValue-prop">"minValue"</a> property for details.
<h3 class=fn><a href="qt.html#Orientation-enum">Orientation</a> <a name="orientation"></a>QSlider::orientation () const
</h3><p>Returns the orientation of the slider.
See the <a href="qslider.html#orientation-prop">"orientation"</a> property for details.
<h3 class=fn>int <a name="pageStep"></a>QSlider::pageStep () const
</h3><p>Returns the current page step.
See the <a href="qslider.html#pageStep-prop">"pageStep"</a> property for details.
<h3 class=fn>void <a name="rangeChange"></a>QSlider::rangeChange ()<tt> [virtual protected]</tt>
</h3>
Implements the virtual <a href="qrangecontrol.html">QRangeControl</a> function.

<p>Reimplemented from <a href="qrangecontrol.html#rangeChange">QRangeControl</a>.
<h3 class=fn>void <a name="setLineStep"></a>QSlider::setLineStep ( int )
</h3><p>Sets the current line step.
See the <a href="qslider.html#lineStep-prop">"lineStep"</a> property for details.
<h3 class=fn>void <a name="setMaxValue"></a>QSlider::setMaxValue ( int )
</h3><p>Sets the current maximum value of the slider.
See the <a href="qslider.html#maxValue-prop">"maxValue"</a> property for details.
<h3 class=fn>void <a name="setMinValue"></a>QSlider::setMinValue ( int )
</h3><p>Sets the current minimum value of the slider.
See the <a href="qslider.html#minValue-prop">"minValue"</a> property for details.
<h3 class=fn>void <a name="setOrientation"></a>QSlider::setOrientation ( <a href="qt.html#Orientation-enum">Orientation</a> )<tt> [virtual]</tt>
</h3><p>Sets the orientation of the slider.
See the <a href="qslider.html#orientation-prop">"orientation"</a> property for details.
<h3 class=fn>void <a name="setPageStep"></a>QSlider::setPageStep ( int )
</h3><p>Sets the current page step.
See the <a href="qslider.html#pageStep-prop">"pageStep"</a> property for details.
<h3 class=fn>void <a name="setPalette"></a>QSlider::setPalette ( const&nbsp;<a href="qpalette.html">QPalette</a>&nbsp;&amp;&nbsp;p )<tt> [virtual]</tt>
</h3>
Reimplements the virtual function <a href="qwidget.html#setPalette">QWidget::setPalette</a>().
<p> Sets the background color to the mid color for Motif style sliders
using palette <em>p</em>.

<p>Reimplemented from <a href="qwidget.html#setPalette">QWidget</a>.
<h3 class=fn>void <a name="setRange"></a>QRangeControl::setRange ( int&nbsp;minValue, int&nbsp;maxValue )
</h3>
Sets the range control's min value to <em>minValue</em> and its max value
to <em>maxValue</em>.
<p> Calls the virtual <a href="#rangeChange">rangeChange</a>() function if one or both of the new
min and max values are different from the previous setting.  Calls
the virtual <a href="#valueChange">valueChange</a>() function if the current value is adjusted
because it was outside the new range.
<p> If <em>maxValue</em> is smaller than <em>minValue</em>, <em>minValue</em> becomes the
only legal value.
<p> <p>See also <a href="#minValue-prop">minValue</a> and <a href="#maxValue-prop">maxValue</a>.

<p>Examples: <a href="listbox-example.html#x1282">listbox/listbox.cpp</a>, <a href="t12.html#x2200">t12/lcdrange.cpp</a>, <a href="t5.html#x2128">t5/main.cpp</a>, <a href="t6.html#x2138">t6/main.cpp</a>, <a href="t8.html#x2147">t8/lcdrange.cpp</a> and <a href="xform-example.html#x106">xform/xform.cpp</a>.
<h3 class=fn>void <a name="setTickInterval"></a>QSlider::setTickInterval ( int )<tt> [virtual]</tt>
</h3><p>Sets the interval between tickmarks.
See the <a href="qslider.html#tickInterval-prop">"tickInterval"</a> property for details.
<h3 class=fn>void <a name="setTickmarks"></a>QSlider::setTickmarks ( <a href="qslider.html#TickSetting-enum">TickSetting</a> )<tt> [virtual]</tt>
</h3><p>Sets the tickmark settings for this slider.
See the <a href="qslider.html#tickmarks-prop">"tickmarks"</a> property for details.
<h3 class=fn>void <a name="setTracking"></a>QSlider::setTracking ( bool&nbsp;enable )<tt> [virtual]</tt>
</h3><p>Sets whether slider tracking is enabled to <em>enable</em>.
See the <a href="qslider.html#tracking-prop">"tracking"</a> property for details.
<h3 class=fn>void <a name="setValue"></a>QSlider::setValue ( int )<tt> [virtual slot]</tt>
</h3><p>Sets the current slider value.
See the <a href="qslider.html#value-prop">"value"</a> property for details.
<h3 class=fn>void <a name="sliderMoved"></a>QSlider::sliderMoved ( int&nbsp;value )<tt> [signal]</tt>
</h3>

This signal is emitted when the slider is dragged, with the
new slider <em>value</em> as an argument.

<h3 class=fn>void <a name="sliderPressed"></a>QSlider::sliderPressed ()<tt> [signal]</tt>
</h3>

This signal is emitted when the user presses the slider with the mouse.

<h3 class=fn><a href="qrect.html">QRect</a> <a name="sliderRect"></a>QSlider::sliderRect () const
</h3>
Returns the slider handle rectangle. (This is the visual marker that
the user can move.)

<h3 class=fn>void <a name="sliderReleased"></a>QSlider::sliderReleased ()<tt> [signal]</tt>
</h3>

This signal is emitted when the user releases the slider with the mouse.

<h3 class=fn>int <a name="sliderStart"></a>QSlider::sliderStart () const
</h3>

<p> Returns the start position of the slider.

<h3 class=fn>void <a name="subtractStep"></a>QSlider::subtractStep ()<tt> [slot]</tt>
</h3>
Moves the slider one <a href="#pageStep">pageStep</a>() down or left.

<h3 class=fn>int <a name="tickInterval"></a>QSlider::tickInterval () const
</h3><p>Returns the interval between tickmarks.
See the <a href="qslider.html#tickInterval-prop">"tickInterval"</a> property for details.
<h3 class=fn><a href="qslider.html#TickSetting-enum">TickSetting</a> <a name="tickmarks"></a>QSlider::tickmarks () const
</h3><p>Returns the tickmark settings for this slider.
See the <a href="qslider.html#tickmarks-prop">"tickmarks"</a> property for details.
<h3 class=fn>bool <a name="tracking"></a>QSlider::tracking () const
</h3><p>Returns TRUE if slider tracking is enabled; otherwise returns FALSE.
See the <a href="qslider.html#tracking-prop">"tracking"</a> property for details.
<h3 class=fn>int <a name="value"></a>QSlider::value () const
</h3><p>Returns the current slider value.
See the <a href="qslider.html#value-prop">"value"</a> property for details.
<h3 class=fn>void <a name="valueChange"></a>QSlider::valueChange ()<tt> [virtual protected]</tt>
</h3>
Implements the virtual <a href="qrangecontrol.html">QRangeControl</a> function.

<p>Reimplemented from <a href="qrangecontrol.html#valueChange">QRangeControl</a>.
<h3 class=fn>void <a name="valueChanged"></a>QSlider::valueChanged ( int&nbsp;value )<tt> [signal]</tt>
</h3>

This signal is emitted when the slider value is changed, with the
new slider <em>value</em> as an argument.

<p>Examples: <a href="rangecontrols-example.html#x608">rangecontrols/rangecontrols.cpp</a>, <a href="t12.html#x2202">t12/lcdrange.cpp</a>, <a href="t5.html#x2130">t5/main.cpp</a>, <a href="t6.html#x2140">t6/main.cpp</a>, <a href="t7.html#x2146">t7/lcdrange.cpp</a> and <a href="xform-example.html#x119">xform/xform.cpp</a>.
<hr><h2>Property Documentation</h2>
<h3 class=fn>int <a name="lineStep-prop"></a>lineStep</h3>
<p>This property holds the current line step.
<p>When setting lineStep, the virtual <a href="qrangecontrol.html#stepChange">stepChange</a>() function will be called
if the new line step is different from the previous setting.
<p> <p>See also <a href="qrangecontrol.html#setSteps">setSteps</a>(), <a href="qrangecontrol.html#pageStep">QRangeControl::pageStep</a>() and <a href="qrangecontrol.html#setRange">setRange</a>().

<p>Set this property's value with <a href="#setLineStep">setLineStep</a>() and get this property's value with <a href="#lineStep">lineStep</a>().
<h3 class=fn>int <a name="maxValue-prop"></a>maxValue</h3>
<p>This property holds the current maximum value of the slider.
<p>When setting this property, the <a href="#minValue-prop">QSlider::minValue</a> is adjusted, if
necessary, to ensure that the range remains valid.
<p> <p>See also <a href="qrangecontrol.html#setRange">setRange</a>().

<p>Set this property's value with <a href="#setMaxValue">setMaxValue</a>() and get this property's value with <a href="#maxValue">maxValue</a>().
<h3 class=fn>int <a name="minValue-prop"></a>minValue</h3>
<p>This property holds the current minimum value of the slider.
<p>When setting this property, the <a href="#maxValue-prop">QSlider::maxValue</a> is adjusted, if
necessary, to ensure that the range remains valid.
<p> <p>See also <a href="qrangecontrol.html#setRange">setRange</a>().

<p>Set this property's value with <a href="#setMinValue">setMinValue</a>() and get this property's value with <a href="#minValue">minValue</a>().
<h3 class=fn><a href="qt.html#Orientation-enum">Orientation</a> <a name="orientation-prop"></a>orientation</h3>
<p>This property holds the orientation of the slider.
<p>The orientation must be <a href="qt.html#Orientation-enum">Qt::Vertical</a> (the default) or <a href="qt.html#Orientation-enum">Qt::Horizontal</a>.

<p>Set this property's value with <a href="#setOrientation">setOrientation</a>() and get this property's value with <a href="#orientation">orientation</a>().
<h3 class=fn>int <a name="pageStep-prop"></a>pageStep</h3>
<p>This property holds the current page step.
<p>When setting pageStep, the virtual <a href="qrangecontrol.html#stepChange">stepChange</a>() function will be called
if the new page step is different from the previous setting.
<p> <p>See also <a href="qrangecontrol.html#setSteps">QRangeControl::setSteps</a>(), <a href="#lineStep-prop">lineStep</a> and <a href="qrangecontrol.html#setRange">setRange</a>().

<p>Set this property's value with <a href="#setPageStep">setPageStep</a>() and get this property's value with <a href="#pageStep">pageStep</a>().
<h3 class=fn>int <a name="tickInterval-prop"></a>tickInterval</h3>
<p>This property holds the interval between tickmarks.
<p>This is a value interval, not a pixel interval. If it is 0, the slider
will choose between <a href="#lineStep">lineStep</a>() and <a href="#pageStep">pageStep</a>(). The initial value of
tickInterval is 0.
<p> <p>See also <a href="qrangecontrol.html#lineStep">QRangeControl::lineStep</a>() and <a href="qrangecontrol.html#pageStep">QRangeControl::pageStep</a>().

<p>Set this property's value with <a href="#setTickInterval">setTickInterval</a>() and get this property's value with <a href="#tickInterval">tickInterval</a>().
<h3 class=fn><a href="qslider.html#TickSetting-enum">TickSetting</a> <a name="tickmarks-prop"></a>tickmarks</h3>
<p>This property holds the tickmark settings for this slider.
<p>The valid values are in <a href="#TickSetting-enum">QSlider::TickSetting</a>. The default is
<a href="#TickSetting-enum">NoMarks</a>.
<p> <p>See also <a href="#tickInterval-prop">tickInterval</a>.

<p>Set this property's value with <a href="#setTickmarks">setTickmarks</a>() and get this property's value with <a href="#tickmarks">tickmarks</a>().
<h3 class=fn>bool <a name="tracking-prop"></a>tracking</h3>
<p>This property holds whether slider tracking is enabled.
<p>If tracking is enabled (the default), the slider emits the
<a href="#valueChanged">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>Set this property's value with <a href="#setTracking">setTracking</a>() and get this property's value with <a href="#tracking">tracking</a>().
<h3 class=fn>int <a name="value-prop"></a>value</h3>
<p>This property holds the current slider value.
<p>Set this property's value with <a href="#setValue">setValue</a>() and get this property's value with <a href="#value">value</a>().
<p><p>See also <a href="qrangecontrol.html#value">QRangeControl::value</a>() and <a href="qrangecontrol.html#prevValue">prevValue</a>().

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