You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
156 lines
6.6 KiB
156 lines
6.6 KiB
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
|
|
<!-- /home/espenr/tmp/qt-3.3.8-espenr-2499/qt-x11-free-3.3.8/extensions/activeqt/control/qaxbindable.cpp:185 -->
|
|
<html>
|
|
<head>
|
|
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
|
|
<title>QAxAggregated Class</title>
|
|
<style type="text/css"><!--
|
|
fn { margin-left: 1cm; text-indent: -1cm; }
|
|
a:link { color: #004faf; text-decoration: none }
|
|
a:visited { color: #672967; text-decoration: none }
|
|
body { background: #ffffff; color: black; }
|
|
--></style>
|
|
</head>
|
|
<body>
|
|
|
|
<table border="0" cellpadding="0" cellspacing="0" width="100%">
|
|
<tr bgcolor="#E5E5E5">
|
|
<td valign=center>
|
|
<a href="index.html">
|
|
<font color="#004faf">Home</font></a>
|
|
| <a href="classes.html">
|
|
<font color="#004faf">All Classes</font></a>
|
|
| <a href="mainclasses.html">
|
|
<font color="#004faf">Main Classes</font></a>
|
|
| <a href="annotated.html">
|
|
<font color="#004faf">Annotated</font></a>
|
|
| <a href="groups.html">
|
|
<font color="#004faf">Grouped Classes</font></a>
|
|
| <a href="functions.html">
|
|
<font color="#004faf">Functions</font></a>
|
|
</td>
|
|
<td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>QAxAggregated Class Reference<br><small>[<a href="qaxserver.html">QAxServer module</a>]</small></h1>
|
|
|
|
<p>The QAxAggregated class is an abstract base class for implementations of
|
|
additional COM interfaces.
|
|
<a href="#details">More...</a>
|
|
<p>This class is part of the <b>Qt ActiveQt Extension</b>.
|
|
<p><tt>#include <<a href="qaxbindable-h.html">qaxbindable.h</a>></tt>
|
|
<p><a href="qaxaggregated-members.html">List of all member functions.</a>
|
|
<h2>Public Members</h2>
|
|
<ul>
|
|
<li class=fn>virtual long <a href="#queryInterface"><b>queryInterface</b></a> ( const QUuid & iid, void ** iface ) = 0</li>
|
|
</ul>
|
|
<h2>Protected Members</h2>
|
|
<ul>
|
|
<li class=fn>IUnknown * <a href="#controllingUnknown"><b>controllingUnknown</b></a> () const</li>
|
|
<li class=fn>QWidget * <a href="#widget"><b>widget</b></a> () const</li>
|
|
<li class=fn>QObject * <a href="#object"><b>object</b></a> () const</li>
|
|
</ul>
|
|
<hr><a name="details"></a><h2>Detailed Description</h2>
|
|
<p> This class is defined in the <b>Qt <a href="activeqt.html#ActiveQt">ActiveQt</a> Extension</b>, which can be found in the <tt>qt/extensions</tt> directory. It is not included in the main Qt API.
|
|
<p>
|
|
|
|
The QAxAggregated class is an abstract base class for implementations of
|
|
additional COM interfaces.
|
|
|
|
<p>
|
|
|
|
<p> Create a subclass of QAxAggregated and reimplement
|
|
<a href="#queryInterface">queryInterface</a>() to support additional COM interfaces. Use
|
|
multiple inheritance from those COM interfaces. Implement the
|
|
IUnknown interface of those COM interfaces by delegating the calls
|
|
to QueryInterface(), AddRef() and Release() to the interface
|
|
provided by <a href="#controllingUnknown">controllingUnknown</a>().
|
|
<p> Use the <a href="#widget">widget</a>() method if you need to make calls to the <a href="qwidget.html">QWidget</a>
|
|
implementing the ActiveX control. You must not store that pointer
|
|
in your subclass (unless you use <a href="qguardedptr.html">QGuardedPtr</a>), as the QWidget can
|
|
be destroyed by the ActiveQt framework at any time.
|
|
|
|
<hr><h2>Member Function Documentation</h2>
|
|
<h3 class=fn>IUnknown * <a name="controllingUnknown"></a>QAxAggregated::controllingUnknown () const<tt> [protected]</tt>
|
|
</h3>
|
|
|
|
<p> Returns the IUnknown interface of the ActiveX control. Implement
|
|
the IUnknown interface in your QAxAggregated subclass to delegate
|
|
calls to QueryInterface(), AddRef() and Release() to the interface
|
|
provided by this function.
|
|
<p> <pre>
|
|
HRESULT AxImpl::QueryInterface( REFIID iid, void **iface )
|
|
{
|
|
return controllingUnknown()->QueryInterface( iid, iface );
|
|
}
|
|
|
|
unsigned long AxImpl::AddRef()
|
|
{
|
|
return controllingUnknown()->AddRef();
|
|
}
|
|
|
|
unsigned long AxImpl::Release()
|
|
{
|
|
return controllingUnknown()->Release();
|
|
}
|
|
</pre>
|
|
|
|
<p> The QAXAGG_IUNKNOWN macro expands to the code above, and you can
|
|
use it in the class declaration of your subclass.
|
|
|
|
<h3 class=fn><a href="qobject.html">QObject</a> * <a name="object"></a>QAxAggregated::object () const<tt> [protected]</tt>
|
|
</h3>
|
|
|
|
<p> Returns a pointer to the <a href="qobject.html">QObject</a> subclass implementing the COM object.
|
|
This function might return 0.
|
|
<p> <b>Warning:</b>
|
|
You must not store the returned pointer, unless you use a
|
|
<a href="qguardedptr.html">QGuardedPtr</a>, since the QObject can be destroyed by <a href="activeqt.html#ActiveQt">ActiveQt</a> at any
|
|
time.
|
|
|
|
<h3 class=fn>long <a name="queryInterface"></a>QAxAggregated::queryInterface ( const <a href="quuid.html">QUuid</a> & iid, void ** iface )<tt> [pure virtual]</tt>
|
|
</h3>
|
|
|
|
<p> Reimplement this pure virtual function to support additional COM
|
|
interfaces. Set the value of <em>iface</em> to point to this object to
|
|
support the interface <em>iid</em>. Note that you must cast the <tt>this</tt> pointer to the appropriate superclass.
|
|
<p> <pre>
|
|
long AxImpl::queryInterface( const <a href="quuid.html">QUuid</a> &iid, void **iface )
|
|
{
|
|
*iface = 0;
|
|
if ( iid == IID_ISomeCOMInterface )
|
|
*iface = (ISomeCOMInterface*)this;
|
|
else
|
|
return E_NOINTERFACE;
|
|
|
|
AddRef();
|
|
return S_OK;
|
|
}
|
|
</pre>
|
|
|
|
<p> Return the standard COM results S_OK (interface is supported) or
|
|
E_NOINTERFACE (requested interface is not supported).
|
|
<p> <b>Warning:</b>
|
|
Even though you must implement the IUnknown interface if you
|
|
implement any COM interface you must not support the IUnknown
|
|
interface in your <a href="#queryInterface">queryInterface</a>() implementation.
|
|
|
|
<h3 class=fn><a href="qwidget.html">QWidget</a> * <a name="widget"></a>QAxAggregated::widget () const<tt> [protected]</tt>
|
|
</h3>
|
|
|
|
<p> Returns a pointer to the <a href="qwidget.html">QWidget</a> subclass implementing the ActiveX control.
|
|
This function might return 0.
|
|
<p> <b>Warning:</b>
|
|
You must not store the returned pointer, unless you use a
|
|
<a href="qguardedptr.html">QGuardedPtr</a>, since the QWidget can be destroyed by <a href="activeqt.html#ActiveQt">ActiveQt</a> at any
|
|
time.
|
|
|
|
<!-- eof -->
|
|
<hr><p>
|
|
This file is part of the <a href="index.html">Qt toolkit</a>.
|
|
Copyright © 1995-2007
|
|
<a href="http://www.trolltech.com/">Trolltech</a>. All Rights Reserved.<p><address><hr><div align=center>
|
|
<table width=100% cellspacing=0 border=0><tr>
|
|
<td>Copyright © 2007
|
|
<a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a>
|
|
<td align=right><div align=right>Qt 3.3.8</div>
|
|
</table></div></address></body>
|
|
</html>
|