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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><html><head><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Qt Toolkit - QNPWidget Class</title><style type="text/css"><!--
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<h1 align=center>QNPWidget Class Reference</h1><br clear="all">
<p>
A <a href="qwidget.html">QWidget</a> that is a Web-browser plugin window
<p>This class is part of the <b>Qt NSPlugin Extension.</b>
<a href="#details">More...</a>
<p>
<code>#include &lt;<a href="qnp-h.html">qnp.h</a>&gt;</code>
<p>
Inherits <a href="qwidget.html">QWidget</a>.
<p><a href="qnpwidget-members.html">List of all member functions.</a>
<h2>Public Members</h2>
<ul>
<li><div class="fn"><a href="#d9e5df"><b>QNPWidget</b></a>()</div>
<li><div class="fn"><a href="#6bd72d"><b>~QNPWidget</b></a>()</div>
<li><div class="fn">void<a href="#856d1b"><b>setWindow</b></a>(bool)</div>
<li><div class="fn">void<a href="#a4ae86"><b>unsetWindow</b></a>()</div>
<li><div class="fn">void<b>show</b>()</div>
<li><div class="fn">virtualvoid<a href="#9a9bc6"><b>enterInstance</b></a>()</div>
<li><div class="fn">virtualvoid<a href="#9e631b"><b>leaveInstance</b></a>()</div>
<li><div class="fn">QNPInstance*<a href="#b28390"><b>instance</b></a>()</div>
</ul>
<hr><h2><a name="details"></a>Detailed Description</h2>
This class is defined in the <b>Qt NSPlugin Extension</b>, which can be found in the <tt>qt/extensions</tt> directory.
It is not included in the main Qt API.
<p>
A <a href="qwidget.html">QWidget</a> that is a Web-browser plugin window
<p>
Derive from QNPWidget to create a widget that can be used as a
Browser plugin window, or create one and add child widgets.
Instances of QNPWidget may only be created
when <a href="qnpinstance.html#9bff06">QNPInstance::newWindow</a>() is called by the browser.
<p>A common way to develop a plugin widget is to develop it as a stand-alone
application window, then make it a <em>child</em> of a plugin widget to use
it as a browser plugin.  The technique is:
<p><pre>class MyPluginWindow : public QNPWidget {
    <a href="qwidget.html">QWidget</a>* child;
public:
    MyPluginWindow()
    {
        // Some widget that is normally used as a top-level widget
        child = new MyIndependentlyDevelopedWidget();

        // Use the background color of the web page
        child-&gt;<a href="qwidget.html#c09181">setBackgroundColor</a>( backgroundColor() );

        // Fill the plugin widget
        child-&gt;<a href="qwidget.html#9ede68">setGeometry</a>( 0, 0, width(), height() );
    }

    void resizeEvent(<a href="qresizeevent.html">QResizeEvent</a>*)
    {
        // Fill the plugin widget
        child-&gt;<a href="qwidget.html#8fcbbe">resize</a>(size());
    }
};
</pre>
<p>The default implementation is an empty window.
<p>Examples:
 <a href="qtimage-qtimage-cpp.html#QNPWidget">qtimage/qtimage.cpp</a>
 <a href="grapher-grapher-cpp.html#QNPWidget">grapher/grapher.cpp</a>
 <a href="trivial-trivial-cpp.html#QNPWidget">trivial/trivial.cpp</a>

<hr><h2>Member Function Documentation</h2>
<h3 class="fn"><a name="d9e5df"></a>QNPWidget::QNPWidget()</h3>
<p>Creates a QNPWidget.
<h3 class="fn"><a name="6bd72d"></a>QNPWidget::~QNPWidget()</h3>
<p>Destroys the window.  This will be called by the plugin binding code
when the window is no longer required.  The Web-browser will delete windows
when they leave the page.  The bindings will change the <a href="qwidget.html#653917">QWidget::winId</a>()
of the window when the window is resized, but this should not affect
normal widget behavior.
<h3 class="fn">void<a name="9a9bc6"></a>QNPWidget::enterInstance() <code>[virtual]</code></h3>
<p>Called when the mouse enters the plugin window.  Default does nothing.
<h3 class="fn"><a href="qnpinstance.html">QNPInstance</a>*<a name="b28390"></a>QNPWidget::instance()</h3>
<p>Returns the instance for which this widget is the window.
<h3 class="fn">void<a name="9e631b"></a>QNPWidget::leaveInstance() <code>[virtual]</code></h3>
<p>Called when the mouse leaves the plugin window.  Default does nothing.
<h3 class="fn">void<a name="856d1b"></a>QNPWidget::setWindow(booldelold)</h3>
<p>For internal use only.
<h3 class="fn">void<a name="a4ae86"></a>QNPWidget::unsetWindow()</h3>
<p>For internal use only.
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