31 lines
6.1 KiB
HTML
31 lines
6.1 KiB
HTML
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
|
||
<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>The Be Book - System Overview - The Interface Kit</title><link rel="stylesheet" href="be_book.css" type="text/css" media="all" /><link rel="shortcut icon" type="image/vnd.microsoft.icon" href="./images/favicon.ico" /><!--[if IE]>
|
||
<link rel="stylesheet" type="text/css" href="be_book_ie.css" />
|
||
<![endif]--><meta name="generator" content="DocBook XSL Stylesheets V1.73.2" /><meta name="keywords" content="Access, BeOS, BeBook, API" /><link rel="start" href="index.html" title="The Be Book" /><link rel="up" href="TheInterfaceKit_Overview.html" title="The Interface Kit" /><link rel="prev" href="BRect_Overview.html" title="BRect" /><link rel="next" href="BScreen_Overview.html" title="BScreen" /></head><body><div id="header"><div id="headerT"><div id="headerTL"><a accesskey="p" href="BRect_Overview.html" title="BRect"><img src="./images/navigation/prev.png" alt="Prev" /></a> <a accesskey="u" href="TheInterfaceKit_Overview.html" title="The Interface Kit"><img src="./images/navigation/up.png" alt="Up" /></a> <a accesskey="n" href="BScreen_Overview.html" title="BScreen"><img src="./images/navigation/next.png" alt="Next" /></a></div><div id="headerTR"><div id="navigpeople"><a href="http://www.haiku-os.org"><img src="./images/People_24.png" alt="haiku-os.org" title="Visit The Haiku Website" /></a></div><div class="navighome" title="Home"><a accesskey="h" href="index.html"><img src="./images/navigation/home.png" alt="Home" /></a></div><div class="navigboxed" id="navigindex"><a accesskey="i" href="ClassIndex.html" title="Index">I</a></div><div class="navigboxed" id="naviglang" title="English">en</div></div><div id="headerTC">The Be Book - System Overview - The Interface Kit</div></div><div id="headerB">Prev: <a href="BRect_Overview.html">BRect</a> Up: <a href="TheInterfaceKit_Overview.html">The Interface Kit</a> Next: <a href="BScreen_Overview.html">BScreen</a></div><hr /></div><div class="section"><div xmlns="" xmlns:d="http://docbook.org/ns/docbook" class="titlepage"><div><div xmlns:d="http://docbook.org/ns/docbook"><h2 xmlns="http://www.w3.org/1999/xhtml" class="title"><a id="BRegion_Overview"></a>BRegion</h2></div></div></div><a id="id555325" class="indexterm"></a><p>
|
||
A <a class="link" href="BRegion.html" title="BRegion"><code class="classname">BRegion</code></a>
|
||
object comprises a set of rectangles in a two-dimensional
|
||
coordinate system. The rectangles needn't overlap; a single
|
||
<a class="link" href="BRegion.html" title="BRegion"><code class="classname">BRegion</code></a> can
|
||
contain a little rectangle way down there, a big one over yonder, and
|
||
another that lives somewhere to the left of Baden Baden.
|
||
</p><p>
|
||
You define and modify the contents of a region through to
|
||
<a class="link" href="BRegion.html#BRegion_Set" title="Set(), Include(), Exclude(), IntersectWith()"><code class="methodname">Set()</code></a>,
|
||
<a class="link" href="BRegion.html#BRegion_Include"><code class="methodname">Include()</code></a>,
|
||
<a class="link" href="BRegion.html#BRegion_Exclude"><code class="methodname">Exclude()</code></a>, and
|
||
<a class="link" href="BRegion.html#BRegion_IntersectWith"><code class="methodname">IntersectWith()</code></a>.
|
||
You can examine a region's rectangle's through
|
||
<a class="link" href="BRegion.html#BRegion_RectAt" title="RectAt(), CountRects()"><code class="methodname">RectAt()</code></a>,
|
||
but note that the object coalesces rectangles when it can, so the
|
||
rectangles that you retrieve may not match the ones that you passed in.
|
||
</p><div class="admonition warning"><div class="title">Warning</div><div class="graphic"><img class="icon" alt="Warning" width="32" src="./images/admonitions/Stop_32.png" /><div class="text"><p>The <a class="link" href="BRegion.html" title="BRegion"><code class="classname">BRegion</code></a>
|
||
class is designed to be used with coordinates with integral
|
||
values only; if any non-integral values are used in the
|
||
<a class="link" href="BRegion.html" title="BRegion"><code class="classname">BRegion</code></a>,
|
||
functions in the class may behave unpredictably.</p></div></div></div><p>
|
||
<a class="link" href="BRegion.html" title="BRegion"><code class="classname">BRegion</code></a> objects can be allocated on the stack.
|
||
</p></div><div id="footer"><hr /><div id="footerT">Prev: <a href="BRect_Overview.html">BRect</a> Up: <a href="TheInterfaceKit_Overview.html">The Interface Kit</a> Next: <a href="BScreen_Overview.html">BScreen</a> </div><div id="footerB"><div id="footerBL"><a href="BRect_Overview.html" title="BRect"><img src="./images/navigation/prev.png" alt="Prev" /></a> <a href="TheInterfaceKit_Overview.html" title="The Interface Kit"><img src="./images/navigation/up.png" alt="Up" /></a> <a href="BScreen_Overview.html" title="BScreen"><img src="./images/navigation/next.png" alt="Next" /></a></div><div id="footerBR"><div><a href="http://www.haiku-os.org"><img src="./images/People_24.png" alt="haiku-os.org" title="Visit The Haiku Website" /></a></div><div class="navighome" title="Home"><a accesskey="h" href="index.html"><img src="./images/navigation/home.png" alt="Home" /></a></div></div><div id="footerBC"><a href="http://www.access-company.com/home.html" title="ACCESS Co."><img alt="Access Company" src="./images/access_logo.png" /></a></div></div></div><div id="licenseFooter"><div id="licenseFooterBL"><a rel="license" href="http://creativecommons.org/licenses/by-nc-nd/3.0/" title="Creative Commons License"><img alt="Creative Commons License" style="border-width:0" src="https://licensebuttons.net/l/by-nc-nd/3.0/88x31.png" /></a></div><div id="licenseFooterBR"><a href="./LegalNotice.html">Legal Notice</a></div><div id="licenseFooterBC"><span id="licenseText">This work is licensed under a
|
||
<a rel="license" href="http://creativecommons.org/licenses/by-nc-nd/3.0/">Creative
|
||
Commons Attribution-Non commercial-No Derivative Works 3.0 License</a>.</span></div></div></body></html>
|