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<HEAD>
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<TITLE>Fl_Slider</TITLE>
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</HEAD>
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<BODY>
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2001-11-28 21:00:17 +03:00
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<!-- NEW PAGE -->
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1999-01-13 22:28:54 +03:00
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<H2><A name=Fl_Slider>class Fl_Slider</A></H2>
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<HR>
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<H3>Class Hierarchy</H3>
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<UL>
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<PRE>
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<A href=Fl_Valuator.html#Fl_Valuator>Fl_Valuator</A>
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1998-12-29 17:21:17 +03:00
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1999-01-13 22:28:54 +03:00
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+----<B>Fl_Slider</B>
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1998-12-29 17:21:17 +03:00
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1999-01-13 22:28:54 +03:00
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+----<A href=Fl_Scrollbar.html#Fl_Scrollbar>Fl_Scrollbar</A>, <A href=Fl_Value_Slider.html#Fl_Value_Slider>Fl_Value_Slider</A>
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</PRE>
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</UL>
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<H3>Include Files</H3>
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<UL>
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<PRE>
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#include <FL/Fl_Slider.H>
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</PRE>
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</UL>
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<H3>Description</H3>
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The <TT>Fl_Slider</TT> widget contains a sliding knob inside a box. It
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if often used as a scrollbar. Moving the box all the way to the
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top/left sets it to the <TT>minimum()</TT>, and to the bottom/right to
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the <TT>maximum()</TT>. The <TT>minimum()</TT> may be greater than the <TT>
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maximum()</TT> to reverse the slider direction.
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2001-10-01 00:25:36 +04:00
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<P ALIGN=CENTER><IMG src="slider.gif" ALT="Fl_Slider widget."></P>
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<H3>Methods</H3>
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<UL>
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<LI><A href=#Fl_Slider.Fl_Slider>Fl_Slider</A></LI>
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<LI><A href=#Fl_Slider.~Fl_Slider>~Fl_Slider</A></LI>
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<LI><A href=#Fl_Slider.scrollvalue>scrollvalue</A></LI>
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<LI><A href=#Fl_Slider.slider>slider</A></LI>
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<LI><A href=#Fl_Slider.slider_size>slider_size</A></LI>
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<LI><A href=#Fl_Slider.type>type</A></LI>
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</UL>
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<H4><A name=Fl_Slider.Fl_Slider>Fl_Slider::Fl_Slider(int x, int y, int
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w, int h, const char *label = 0)</A></H4>
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Creates a new <TT>Fl_Slider</TT> widget using the given position,
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size, and label string. The default boxtype is <TT>FL_DOWN_BOX</TT>.
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<H4><A name=Fl_Slider.~Fl_Slider>virtual Fl_Slider::~Fl_Slider()</A></H4>
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Destroys the valuator.
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<H4><A name=Fl_Slider.scrollvalue>int Fl_Slider::scrollvalue(int
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windowtop, int windowsize, int first, int totalsize)</A></H4>
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Returns <A href=Fl_Scrollbar.html#Fl_Scrollbar.value><TT>
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Fl_Scrollbar::value()</TT></A>.
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<H4><A name=Fl_Slider.slider>Fl_Boxtype Fl_Slider::slider() const
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<BR> void Fl_Slider::slider(Fl_Boxtype)</A></H4>
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Set the type of box to draw for the moving part of the slider. The
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color of the moving part (or of the notch in it for the nice sliders)
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is controlled by <TT>selection_color()</TT>. The default value of zero
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causes the slider to figure out what to draw from <TT>box()</TT>.
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<H4><A name=Fl_Slider.slider_size>float Fl_Slider::slider_size() const
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<BR> void Fl_Slider::slider_size(float)</A></H4>
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Get or set the dimensions of the moving piece of slider. This is the
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fraction of the size of the entire widget. If you set this to 1 then
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the slider cannot move. The default value is .08.
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<P>For the "fill" sliders this is the size of the area around the end
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that causes a drag effect rather than causing the slider to jump to the
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mouse. </P>
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<H4><A name=Fl_Slider.type>uchar Fl_Widget::type() const
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<BR> void Fl_Widget::type(uchar t)</A></H4>
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Setting this changes how the slider is drawn, which can be one of the
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following:
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<UL>
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<LI><TT>FL_VERTICAL</TT> - Draws a vertical slider (this is the
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default). </LI>
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<LI><TT>FL_HORIZONTAL</TT> - Draws a horizontal slider. </LI>
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<LI><TT>FL_VERT_FILL_SLIDER</TT> - Draws a filled vertical slider,
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useful as a progress or value meter. </LI>
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<LI><TT>FL_HOR_FILL_SLIDER</TT> - Draws a filled horizontal slider,
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useful as a progress or value meter. </LI>
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<LI><TT>FL_VERT_NICE_SLIDER</TT> - Draws a vertical slider with a nice
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looking control knob. </LI>
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<LI><TT>FL_HOR_NICE_SLIDER</TT> - Draws a horizontal slider with a
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nice looking control knob. </LI>
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</UL>
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</BODY></HTML>
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