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183 lines
8.1 KiB
183 lines
8.1 KiB
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<!-- /home/espenr/tmp/qt-3.3.8-espenr-2499/qt-x11-free-3.3.8/extensions/activeqt/examples/simple/simple.doc:45 -->
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<title>A simple ActiveTQt control (executable)</title>
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<font color="#004faf">Home</font></a>
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<td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>A simple ActiveTQt control (executable)</h1>
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The ActiveX control in this example is a layouted <a href="ntqwidget.html">TQWidget</a>
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with a <a href="ntqslider.html">TQSlider</a>, a <a href="ntqlcdnumber.html">TQLCDNumber</a> and a <a href="ntqlineedit.html">TQLineEdit</a>.
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It provides a signal/slot/property interface to change the
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values of the slider and the line edit, and to get notified
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of any property changes.
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<p> It demonstrates the use of <a href="qaxbindable.html#requestPropertyChange">TQAxBindable::requestPropertyChange</a>()
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and <a href="qaxbindable.html#propertyChanged">TQAxBindable::propertyChanged</a>(), and the use of the default
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<a href="qaxfactory.html">TQAxFactory</a> through the <a href="qaxfactory.html#TQAXFACTORY_DEFAULT">TQAXFACTORY_DEFAULT</a> macro.
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<p>
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<p> The TQt implementation of the ActiveX for this example is
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<pre> class TQSimpleAX : public <a href="ntqwidget.html">TQWidget</a>, public TQAxBindable
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{
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<a href="metaobjects.html#TQ_OBJECT">TQ_OBJECT</a>
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TQ_PROPERTY( TQString text READ text WRITE setText )
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TQ_PROPERTY( int value READ value WRITE setValue )
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public:
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TQSimpleAX( <a href="ntqwidget.html">TQWidget</a> *parent = 0, const char *name = 0 )
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: <a href="ntqwidget.html">TQWidget</a>( parent, name )
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{
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<a href="qvboxlayout.html">TQVBoxLayout</a> *vbox = new <a href="qvboxlayout.html">TQVBoxLayout</a>( this );
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slider = new <a href="ntqslider.html">TQSlider</a>( 0, 100, 1, 0, TQSlider::Horizontal, this );
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LCD = new <a href="ntqlcdnumber.html">TQLCDNumber</a>( 3, this );
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edit = new <a href="ntqlineedit.html">TQLineEdit</a>( this );
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<a name="x2528"></a> connect( slider, TQ_SIGNAL( <a href="ntqslider.html#valueChanged">valueChanged</a>( int ) ), this, TQ_SLOT( setValue(int) ) );
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<a name="x2523"></a> connect( edit, TQ_SIGNAL(<a href="ntqlineedit.html#textChanged">textChanged</a>(const <a href="ntqstring.html">TQString</a>&)), this, TQ_SLOT(setText(const <a href="ntqstring.html">TQString</a>&)) );
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vbox-><a href="qboxlayout.html#addWidget">addWidget</a>( slider );
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vbox-><a href="qboxlayout.html#addWidget">addWidget</a>( LCD );
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vbox-><a href="qboxlayout.html#addWidget">addWidget</a>( edit );
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}
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<a href="ntqstring.html">TQString</a> text() const
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{
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<a name="x2522"></a> return edit-><a href="ntqlineedit.html#text">text</a>();
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}
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int value() const
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{
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<a name="x2527"></a> return slider-><a href="ntqslider.html#value">value</a>();
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}
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signals:
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void someSignal();
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void valueChanged(int);
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void textChanged(const <a href="ntqstring.html">TQString</a>&);
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public slots:
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void setText( const <a href="ntqstring.html">TQString</a> &string )
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{
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if ( !requestPropertyChange( "text" ) )
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return;
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<a name="x2525"></a> edit-><a href="ntqobject.html#blockSignals">blockSignals</a>( TRUE );
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<a name="x2521"></a> edit-><a href="ntqlineedit.html#setText">setText</a>( string );
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edit-><a href="ntqobject.html#blockSignals">blockSignals</a>( FALSE );
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emit someSignal();
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emit textChanged( string );
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propertyChanged( "text" );
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}
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void about()
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{
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<a name="x2524"></a> TQMessageBox::<a href="ntqmessagebox.html#information">information</a>( this, "About TQSimpleAX", "This is a TQt widget, and this slot has been\n"
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"called through ActiveX/OLE automation!" );
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}
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void setValue( int i )
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{
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if ( !requestPropertyChange( "value" ) )
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return;
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slider-><a href="ntqobject.html#blockSignals">blockSignals</a>( TRUE );
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<a name="x2526"></a> slider-><a href="ntqslider.html#setValue">setValue</a>( i );
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slider-><a href="ntqobject.html#blockSignals">blockSignals</a>( FALSE );
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LCD-><a href="ntqlcdnumber.html#display">display</a>( i );
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emit valueChanged( i );
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propertyChanged( "value" );
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}
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private:
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<a href="ntqslider.html">TQSlider</a> *slider;
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<a href="ntqlcdnumber.html">TQLCDNumber</a> *LCD;
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<a href="ntqlineedit.html">TQLineEdit</a> *edit;
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};
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</pre>
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<p> The control is exported using the default <a href="qaxfactory.html">TQAxFactory</a>
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<pre> TQAXFACTORY_DEFAULT(TQSimpleAX,
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"{DF16845C-92CD-4AAB-A982-EB9840E74669}",
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"{616F620B-91C5-4410-A74E-6B81C76FFFE0}",
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"{E1816BBA-BF5D-4A31-9855-D6BA432055FF}",
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"{EC08F8FC-2754-47AB-8EFE-56A54057F34E}",
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"{A095BA0C-224F-4933-A458-2DD7F6B85D8F}")
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</pre>
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<p> To build the example you must first build the <a href="qaxserver.html">TQAxServer</a> library. Then run qmake and your make tool in
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<tt>examples/simple</tt>.
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<p> <hr>
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<p> The <a href="qaxserver-demo-simple.html">demonstration</a> requires your
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WebBrowser to support ActiveX controls, and scripting to be enabled.
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<p> The simple ActiveX control is embedded using the <tt><object></tt> tag.
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<pre> <object ID="TQSimpleAX" CLASSID="CLSID:DF16845C-92CD-4AAB-A982-EB9840E74669"
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CODEBASE=http://www.trolltech.com/demos/simpleax.cab>
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<PARAM NAME="text" VALUE="A simple control">
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<PARAM NAME="value" VALUE="1">
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[Object not available! Did you forget to build and register the server?]
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</object>
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</pre>
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<p> A simple HTML button is connected to the <a href="activentqt.html#ActiveTQt">ActiveTQt</a>'s about() slot.
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<pre> <FORM>
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<INPUT TYPE="BUTTON" VALUE="About..." onClick="TQSimpleAX.about()">
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</FORM>
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</pre>
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<p> A second ActiveX control - the standard Calendar Control - is instantiated
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<pre> <object ID="Calendar" CLASSID="CLSID:8E27C92B-1264-101C-8A2F-040224009C02">
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[Standard Calendar control not available!]
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<PARAM NAME="day" VALUE="1">
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</object>
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</pre>
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<p> Events from the ActiveX controls are handled using both Visual Basic Script
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and JavaScript.
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<pre> <SCRIPT LANGUAGE=VBScript>
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Sub Calendar_Click()
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MsgBox( "Calendar Clicked!" )
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End Sub
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Sub TQSimpleAX_TextChanged( str )
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document.title = str
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End Sub
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</SCRIPT>
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<SCRIPT LANGUAGE=JavaScript>
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function TQSimpleAX::ValueChanged( Newvalue )
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{
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Calendar.Day = Newvalue;
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}
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</SCRIPT>
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</pre><p>See also <a href="qaxserver-examples.html">The TQAxServer Examples</a>.
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<table width=100% cellspacing=0 border=0><tr>
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<td>Copyright © 2007
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<a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a>
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<td align=right><div align=right>TQt 3.3.8</div>
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</table></div></address></body>
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