thr3ads.net - wxruby development - [Wxruby-development] [979] branches/wxruby2/wxwidgets_282/lib/wx/classes/paintdc.rb: Prevent dangerous direct instantiation of PaintDC [Apr 2007]

If this information is useful, please help other people find it:
Share via:

nobody at rubyforge.org

2007-Apr-28 23:56 UTC

[Wxruby-development] [979] branches/wxruby2/wxwidgets_282/lib/wx/classes/paintdc.rb: Prevent dangerous direct instantiation of PaintDC

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
"http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head><meta http-equiv="content-type"
content="text/html; charset=utf-8" /><style
type="text/css"><!--
#msg dl { border: 1px #006 solid; background: #369; padding: 6px; color: #fff; }
#msg dt { float: left; width: 6em; font-weight: bold; }
#msg dt:after { content:'':'';}
#msg dl, #msg dt, #msg ul, #msg li, #header, #footer { font-family:
verdana,arial,helvetica,sans-serif; font-size: 10pt;  }
#msg dl a { font-weight: bold}
#msg dl a:link    { color:#fc3; }
#msg dl a:active  { color:#ff0; }
#msg dl a:visited { color:#cc6; }
h3 { font-family: verdana,arial,helvetica,sans-serif; font-size: 10pt;
font-weight: bold; }
#msg pre { overflow: auto; background: #ffc; border: 1px #fc0 solid; padding:
6px; }
#msg ul, pre { overflow: auto; }
#header, #footer { color: #fff; background: #636; border: 1px #300 solid;
padding: 6px; }
#patch { width: 100%; }
#patch h4 {font-family:
verdana,arial,helvetica,sans-serif;font-size:10pt;padding:8px;background:#369;color:#fff;margin:0;}
#patch .propset h4, #patch .binary h4 {margin:0;}
#patch pre {padding:0;line-height:1.2em;margin:0;}
#patch .diff {width:100%;background:#eee;padding: 0 0 10px 0;overflow:auto;}
#patch .propset .diff, #patch .binary .diff  {padding:10px 0;}
#patch span {display:block;padding:0 10px;}
#patch .modfile, #patch .addfile, #patch .delfile, #patch .propset, #patch
.binary, #patch .copfile {border:1px solid #ccc;margin:10px 0;}
#patch ins {background:#dfd;text-decoration:none;display:block;padding:0 10px;}
#patch del {background:#fdd;text-decoration:none;display:block;padding:0 10px;}
#patch .lines, .info {color:#888;background:#fff;}
--></style>
<title>[979] branches/wxruby2/wxwidgets_282/lib/wx/classes/paintdc.rb:
Prevent dangerous direct instantiation of PaintDC</title>
</head>
<body>

<div id="msg">
<dl>
<dt>Revision</dt> <dd>979</dd>
<dt>Author</dt> <dd>brokentoy</dd>
<dt>Date</dt> <dd>2007-04-28 19:56:32 -0400 (Sat, 28 Apr
2007)</dd>
</dl>

<h3>Log Message</h3>
<pre>Prevent dangerous direct instantiation of PaintDC</pre>

<h3>Added Paths</h3>
<ul>
<li><a
href="#brancheswxruby2wxwidgets_282libwxclassespaintdcrb">branches/wxruby2/wxwidgets_282/lib/wx/classes/paintdc.rb</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a
id="brancheswxruby2wxwidgets_282libwxclassespaintdcrb"></a>
<div class="addfile"><h4>Added:
branches/wxruby2/wxwidgets_282/lib/wx/classes/paintdc.rb (0 =>
979)</h4>
<pre class="diff"><span>
<span class="info">---
branches/wxruby2/wxwidgets_282/lib/wx/classes/paintdc.rb&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp
(rev 0)
+++
branches/wxruby2/wxwidgets_282/lib/wx/classes/paintdc.rb&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp2007-04-28
23:56:32 UTC (rev 979)
</span><span class="lines">@@ -0,0 +1,12 @@
</span><ins>+# Device Context to paint within an on_paint handler
+class Wx::PaintDC
+  # This class should not be instantiated directly in wxRuby; it should
+  # always be used via Window#paint, which takes a block receiving the
+  # DC. This ensures that the DC is cleaned up at the correct time,
+  # preventing serious errors on some platforms.
+  def initialize(*args)
+    Kernel.raise RuntimeError,
+                 "Do not instantiate PaintDC directly; use
Window#paint",
+                 caller[1..-1]
+  end
+end
</ins></span></pre>
</div>
</div>

</body>
</html>

Seemingly Similar Threads

Search for more apparently analagous threads

wxruby development - Apr 2007 - [979] branches/wxruby2/wxwidgets_282/lib/wx/classes/paintdc.rb: Prevent dangerous direct instantiation of PaintDC

[Wxruby-development] [979] branches/wxruby2/wxwidgets_282/lib/wx/classes/paintdc.rb: Prevent dangerous direct instantiation of PaintDC

Seemingly Similar Threads

Wisdom of the Ancients