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diff --git a/doc/html/qaxserver-example-opengl.html b/doc/html/qaxserver-example-opengl.html new file mode 100644 index 0000000..33d884e --- /dev/null +++ b/doc/html/qaxserver-example-opengl.html @@ -0,0 +1,206 @@ +<!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/examples/opengl/opengl.doc:33 --> +<html> +<head> +<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> +<title>Qt' OpenGL widgets as an ActiveX (executable)</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>Qt' OpenGL widgets as an ActiveX (executable)</h1> + + + +The ActiveX control in this example uses the QGlWidget class in +Qt to render an OpenGL scene in an ActiveX. The control exposes a few +methods to change the scene. The example is based on the +<a href="opengl-box-example.html">"box" example</a> from the standard +Qt distribution. +<p> The example demonstrates the use of the default factory and +<a href="qaxfactory.html#isServer">QAxFactory::isServer</a>(), and the implementation of an additional COM +interface using <a href="qaxbindable.html">QAxBindable</a> and <a href="qaxaggregated.html">QAxAggregated</a>. The server executable +can run both as an ActiveX server and as a stand alone application. +<p> + +The application uses the default factory as provided by the +<a href="qaxfactory.html#QAXFACTORY_DEFAULT">QAXFACTORY_DEFAULT</a> macro to expose the <tt>GLBox</tt> widget as an ActiveX +control. +<pre> #include <<a href="qaxfactory-h.html">qaxfactory.h</a>> + + QAXFACTORY_DEFAULT( GLBox, + "{5fd9c22e-ed45-43fa-ba13-1530bb6b03e0}", + "{33b051af-bb25-47cf-a390-5cfd2987d26a}", + "{8c996c29-eafa-46ac-a6f9-901951e765b5}", + "{2c3c183a-eeda-41a4-896e-3d9c12c3577d}", + "{83e16271-6480-45d5-aaf1-3f40b7661ae4}" + ) +</pre>The implementation of <tt>main</tt> initializes the <a href="qapplication.html">QApplication</a> object, +and uses <a href="qaxfactory.html#isServer">QAxFactory::isServer</a>() to determine whether or not it is +appropriate to create and show the application interface. +<pre> /* + The main program is here. + */ + + int main( int argc, char **argv ) + { + <a name="x2732"></a> QApplication::<a href="qapplication.html#setColorSpec">setColorSpec</a>( QApplication::CustomColor ); + <a href="qapplication.html">QApplication</a> a(argc,argv); + + if ( !QGLFormat::hasOpenGL() ) { + <a href="qapplication.html#qWarning">qWarning</a>( "This system has no OpenGL support. Exiting." ); + return -1; + } + + if ( !QAxFactory::isServer() ) { + GLObjectWindow w; + w.<a href="qwidget.html#resize">resize</a>( 400, 350 ); + <a name="x2733"></a> a.<a href="qapplication.html#setMainWidget">setMainWidget</a>( &w ); + w.<a href="qwidget.html#show">show</a>(); + return a.<a href="qapplication.html#exec">exec</a>(); + } + <a name="x2731"></a> return a.<a href="qapplication.html#exec">exec</a>(); + } +</pre> +<p> + +The <tt>GLBox</tt> class inherits from both the <a href="qglwidget.html">QGLWidget</a> class to be able +to render OpenGL, and from <a href="qaxbindable.html">QAxBindable</a>. +<pre> #include <<a href="qaxbindable-h.html">qaxbindable.h</a>> + + class GLBox : public <a href="qglwidget.html">QGLWidget</a>, + public QAxBindable + { + <a href="metaobjects.html#Q_OBJECT">Q_OBJECT</a> +</pre>The class reimplements the <a href="qaxbindable.html#createAggregate">QAxBindable::createAggregate</a>() function from <a href="qaxbindable.html">QAxBindable</a> +to return the pointer to a <a href="qaxaggregated.html">QAxAggregated</a> object. +<pre> public: + + GLBox( <a href="qwidget.html">QWidget</a>* parent, const char* name ); + ~GLBox(); + + <a href="qaxaggregated.html">QAxAggregated</a> *createAggregate(); + + public slots: + + void setXRotation( int degrees ); +</pre>The rest of the class declaration and the implementation of the OpenGL +rendering is identical to the original "box" example. +<p> + +The implementation file of the <tt>GLBox</tt> class includes the <tt>objsafe.h</tt> +system header, in which the <tt>IObjectSafety</tt> COM interface is defined. +<pre> #include <objsafe.h> +</pre>A class <tt>ObjectSafetyImpl</tt> is declared using multiple inheritance +to subclass the <a href="qaxaggregated.html">QAxAggregated</a> class, and to implement the IObjectSafety +interface. +<pre> class ObjectSafetyImpl : public <a href="qaxaggregated.html">QAxAggregated</a>, + public IObjectSafety + { + public: +</pre>The class declares a default constructor, and implements the queryInterface +function to support the IObjectSafety interface. +<pre> ObjectSafetyImpl() {} + + long queryInterface( const <a href="quuid.html">QUuid</a> &iid, void **iface ) + { + *iface = 0; + if ( iid == IID_IObjectSafety ) + *iface = (IObjectSafety*)this; + else + return E_NOINTERFACE; + + AddRef(); + return S_OK; + } +</pre>Since every COM interface inherits <tt>IUnknown</tt> the <tt>QAXAGG_IUNKNOWN</tt> macro +is used to provide the default implementation of the <tt>IUnknown</tt> interface. +The macro is defined to delegate all calls to <tt>QueryInterface</tt>, <tt>AddRef</tt> +and <tt>Release</tt> to the interface returned by the controllingUnknown() function. +<pre> QAXAGG_IUNKNOWN; +</pre>The implementation of the <tt>IObjectSafety</tt> interface provides the caller +with information about supported and enabled safety options, and returns +<tt>S_OK</tt> for all calls to indicate that the ActiveX control is safe. +<pre> HRESULT WINAPI GetInterfaceSafetyOptions( REFIID riid, DWORD *pdwSupportedOptions, DWORD *pdwEnabledOptions ) + { + *pdwSupportedOptions = INTERFACESAFE_FOR_UNTRUSTED_DATA | INTERFACESAFE_FOR_UNTRUSTED_CALLER; + *pdwEnabledOptions = INTERFACESAFE_FOR_UNTRUSTED_DATA | INTERFACESAFE_FOR_UNTRUSTED_CALLER; + return S_OK; + } + HRESULT WINAPI SetInterfaceSafetyOptions( REFIID riid, DWORD pdwSupportedOptions, DWORD pdwEnabledOptions ) + { + return S_OK; + } + }; +</pre>The implementation of the <tt>createAggregate()</tt> function just returns a new +<tt>ObjectSafetyImpl</tt> object. +<pre> QAxAggregated *GLBox::createAggregate() + { + return new ObjectSafetyImpl(); + } +</pre> +<p> To build the example you must first build the <a href="qaxserver.html">QAxServer</a> library. Then run qmake and your make tool in +<tt>examples/wrapper</tt>. +<p> <hr> +<p> The <a href="qaxserver-demo-opengl.html">demonstration</a> requires your +WebBrowser to support ActiveX controls, and scripting to be enabled. +<p> In contrast to the other QAxServer examples Internet Explorer will not +open a dialog box to ask the user whether or not the scripting of the GLBox +control should be allowed (the exact browser behaviour depends on the security +settings in the Internet Options dialog). +<p> + +<pre> <SCRIPT LANGUAGE=JavaScript> + function setRot( form ) + { + GLBox.setXRotation( form.XEdit.value ); + GLBox.setYRotation( form.YEdit.value ); + GLBox.setZRotation( form.ZEdit.value ); + } + </SCRIPT> + + <p> + An OpenGL scene:<br> + <object ID="GLBox" CLASSID="CLSID:5fd9c22e-ed45-43fa-ba13-1530bb6b03e0" + CODEBASE=http://www.trolltech.com/demos/openglax.cab> + [Object not available! Did you forget to build and register the server?] + </object><br> + + <form> + Rotate the scene:<br> + X:<input type="edit" ID="XEdit" value="0"><br> + Y:<input type="edit" name="YEdit" value="0"><br> + Z:<input type="edit" name="ZEdit" value="0"><br> + <input type="button" value="Set" onClick="setRot(this.form)"> + </form> +</pre><p>See also <a href="qaxserver-examples.html">The QAxServer Examples</a>. + +<!-- eof --> +<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> |