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git-svn-id: file:///fltk/svn/fltk/trunk@219 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
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Michael R Sweet
1999-01-13 19:28:54 +00:00
parent 30fa233681
commit d7b88a3bcc
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documentation/Fl_Scrollbar.html
+58 -77
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@@ -1,78 +1,59 @@
<html>
<body>
<hr break>
<h2><a name="Fl_Scrollbar">class Fl_Scrollbar</a></h2>
<hr>
<h3>Class Hierarchy</h3>
<ul><pre>
<a href="#Fl_Slider">Fl_Slider</a>
<HTML><BODY>
<HR break>
<H2><A name=Fl_Scrollbar>class Fl_Scrollbar</A></H2>
<HR>
<H3>Class Hierarchy</H3>
<UL>
<PRE>
<A href=Fl_Slider.html#Fl_Slider>Fl_Slider</A>
|
+----<b>Fl_Scrollbar</b>
</pre></ul>
<h3>Include Files</h3>
<ul><pre>
#include &lt;FL/Fl_Scrollbar.H>
</pre></ul>
<h3>Description</h3>
The <tt>Fl_Scrollbar</tt> widget displays a slider with arrow buttons
at the ends of the scrollbar. Clicking on the arrows move up/left and
down/right by <tt>linesize()</tt>. Scrollbars also accept
<tt>FL_SHORTCUT</tt> events: the arrows move by <tt>linesize()</tt>,
and vertical scrollbars take Page Up/Down (they move by the page size
minus <tt>linesize()</tt>) and Home/End (they jump to the top or
bottom).
<p>Scrollbars have <tt>step(1)</tt> preset (they always return
integers). If desired you can set the <tt>step()</tt> to non-integer
values. You will then have to use casts to get at the floating-point
versions of <tt>value()</tt> from <tt>Fl_Slider</tt>.
<h3>Methods</h3>
<ul>
<li><a href="#Fl_Scrollbar.Fl_Scrollbar">Fl_Scrollbar</a>
<li><a href="#Fl_Scrollbar.~Fl_Scrollbar">~Fl_Scrollbar</a>
<li><a href="#Fl_Scrollbar.linesize">linesize</a>
<li><a href="#Fl_Scrollbar.value">value</a>
</ul>
<h4><a name="Fl_Scrollbar.Fl_Scrollbar">Fl_Scrollbar::Fl_Scrollbar(int x, int y, int w, int h, const char *label = 0)</a></h4>
Creates a new <tt>Fl_Scrollbar</tt> widget using the given position,
size, and label string. You need to do <tt>type(FL_HORIZONTAL)</tt> if
you want a horizontal scrollbar.
<h4><a name="Fl_Scrollbar.~Fl_Scrollbar">virtual Fl_Scrollbar::~Fl_Scrollbar()</a></h4>
Destroys the valuator.
<h4><a name="Fl_Scrollbar.linesize">int Fl_Scrollbar::linesize() const<br>
void Fl_Scrollbar::linesize(int i)</a></h4>
This number controls how big the steps are that the arrow keys do. In
addition page up/down move by the size last sent to <tt>value()</tt>
minus one <tt>linesize()</tt>. The default is 16.
<h4><a name="Fl_Scrollbar.value">int Fl_Scrollbar::value()<br>
int Fl_Scrollbar::value(int position, int size, int top, int total)</a></h4>
The first form returns the integer value of the scrollbar. You can get
the floating point value with <tt>Fl_Slider::value()</tt>.
The second form sets <tt>value()</tt>, <tt>range()</tt>, and
<tt>slider_size()</tt> to make a variable-sized scrollbar. You should
call this every time your window changes size, your data changes size,
or your scroll position changes (even if in response to a callback from
this scrollbar). All necessary calls to <tt>redraw()</tt> are done.
</body>
</html>
+----<B>Fl_Scrollbar</B>
</PRE>
</UL>
<H3>Include Files</H3>
<UL>
<PRE>
#include &lt;FL/Fl_Scrollbar.H&gt;
</PRE>
</UL>
<H3>Description</H3>
The <TT>Fl_Scrollbar</TT> widget displays a slider with arrow buttons
at the ends of the scrollbar. Clicking on the arrows move up/left and
down/right by <TT>linesize()</TT>. Scrollbars also accept <TT>
FL_SHORTCUT</TT> events: the arrows move by <TT>linesize()</TT>, and
vertical scrollbars take Page Up/Down (they move by the page size minus <TT>
linesize()</TT>) and Home/End (they jump to the top or bottom).
<P>Scrollbars have <TT>step(1)</TT> preset (they always return
integers). If desired you can set the <TT>step()</TT> to non-integer
values. You will then have to use casts to get at the floating-point
versions of <TT>value()</TT> from <TT>Fl_Slider</TT>. </P>
<H3>Methods</H3>
<UL>
<LI><A href=#Fl_Scrollbar.Fl_Scrollbar>Fl_Scrollbar</A></LI>
<LI><A href=#Fl_Scrollbar.~Fl_Scrollbar>~Fl_Scrollbar</A></LI>
<LI><A href=#Fl_Scrollbar.linesize>linesize</A></LI>
<LI><A href=#Fl_Scrollbar.value>value</A></LI>
</UL>
<H4><A name=Fl_Scrollbar.Fl_Scrollbar>Fl_Scrollbar::Fl_Scrollbar(int x,
int y, int w, int h, const char *label = 0)</A></H4>
Creates a new <TT>Fl_Scrollbar</TT> widget using the given position,
size, and label string. You need to do <TT>type(FL_HORIZONTAL)</TT> if
you want a horizontal scrollbar.
<H4><A name=Fl_Scrollbar.~Fl_Scrollbar>virtual
Fl_Scrollbar::~Fl_Scrollbar()</A></H4>
Destroys the valuator.
<H4><A name=Fl_Scrollbar.linesize>int Fl_Scrollbar::linesize() const
<BR> void Fl_Scrollbar::linesize(int i)</A></H4>
This number controls how big the steps are that the arrow keys do. In
addition page up/down move by the size last sent to <TT>value()</TT>
minus one <TT>linesize()</TT>. The default is 16.
<H4><A name=Fl_Scrollbar.value>int Fl_Scrollbar::value()
<BR> int Fl_Scrollbar::value(int position, int size, int top, int total)</A>
</H4>
The first form returns the integer value of the scrollbar. You can get
the floating point value with <TT>Fl_Slider::value()</TT>. The second
form sets <TT>value()</TT>, <TT>range()</TT>, and <TT>slider_size()</TT>
to make a variable-sized scrollbar. You should call this every time
your window changes size, your data changes size, or your scroll
position changes (even if in response to a callback from this
scrollbar). All necessary calls to <TT>redraw()</TT> are done. </BODY></HTML>