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+<html>
+<body>
+
+<hr break>
+
+<h2><a name="Fl_Double_Window">class Fl_Double_Window</a></h2>
+
+<hr>
+
+<h3>Class Hierarchy</h3>
+
+<ul><pre>
+<a href="#Fl_Window">Fl_Window</a>
+   |
+   +----<b>Fl_Double_Window</b>
+</pre></ul>
+
+<h3>Include Files</h3>
+
+<ul><pre>
+#include &lt;FL/Fl_Double_Window.H>
+</pre></ul>
+
+<h3>Description</h3>
+
+The <tt>Fl_Double_Window</tt> class provides a double-buffered window. 
+If possible this will use the X double buffering extension (Xdbe).  If
+not, it will draw the window data into an off-screen pixmap, and then
+copy it to the on-screen window.
+
+<p>It is highly recommended that you put the following code before the
+first <tt>show()</tt> of <i>any</i> window in your program:
+
+<ul><pre>
+Fl::visual(FL_DOUBLE|FL_INDEX)
+</pre></ul>
+
+This makes sure you can use Xdbe on servers where double buffering does
+not exist for every visual.
+
+<h3>Methods</h3>
+
+<ul>
+	<li><a href="#Fl_Double_Window.Fl_Double_Window">Fl_Double_Window</a>
+	<li><a href="#Fl_Double_Window.~Fl_Double_Window">~Fl_Double_Window</a>
+	<li><a href="#Fl_Double_Window.pixmap">pixmap</a>
+</ul>
+
+<h4><a name="Fl_Double_Window.Fl_Double_Window">Fl_Double_Window::Fl_Double_Window(int x, int y, int w, int h, const char *label = 0)</a></h4>
+
+Creates a new <tt>Fl_Double_Window</tt> widget using the given position, size, and
+label (title) string.
+
+<h4><a name="Fl_Double_Window.~Fl_Double_Window">virtual Fl_Double_Window::~Fl_Double_Window()</a></h4>
+
+The destructor <i>also deletes all the children</i>. This allows a
+whole tree to be deleted at once, without having to keep a pointer to all
+the children in the user code.
+
+<h4><a name="Fl_Double_Window.pixmap>ulong Fl_Double_Window::pixmap() const</a></h4>
+
+Returns the off-screen pixmap or back buffer. This value is zero until
+the first time <tt>flush()</tt> is called.
+
+</body>
+</html>