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| author | Timothy Pearson <kb9vqf@pearsoncomputing.net> | 2011-07-10 15:24:15 -0500 |
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| committer | Timothy Pearson <kb9vqf@pearsoncomputing.net> | 2011-07-10 15:24:15 -0500 |
| commit | bd0f3345a938b35ce6a12f6150373b0955b8dd12 (patch) | |
| tree | 7a520322212d48ebcb9fbe1087e7fca28b76185c /doc/html/qaxcontainer-example-webbrowser.html | |
| download | qt3-bd0f3345a938b35ce6a12f6150373b0955b8dd12.tar.gz qt3-bd0f3345a938b35ce6a12f6150373b0955b8dd12.zip | |
Add Qt3 development HEAD version
Diffstat (limited to 'doc/html/qaxcontainer-example-webbrowser.html')
| -rw-r--r-- | doc/html/qaxcontainer-example-webbrowser.html | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/doc/html/qaxcontainer-example-webbrowser.html b/doc/html/qaxcontainer-example-webbrowser.html new file mode 100644 index 0000000..cae40a7 --- /dev/null +++ b/doc/html/qaxcontainer-example-webbrowser.html @@ -0,0 +1,128 @@ +<!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/webbrowser/webbrowser.doc:1 --> +<html> +<head> +<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> +<title>A Web Browser</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>A Web Browser</h1> + + + +This example utilizes the Microsoft Web Browser ActiveX control +to implement a fully functional Web Browser application. The +user interface has been developed using the Qt Designer +integration of the <a href="qaxwidget.html">QAxWidget</a> class. +<p> The code demonstrates how the Qt application can communicate +with the embedded ActiveX controls using signals, slots and the +dynamicCall() function. Most signal and slot connections have +already been set up within Qt Designer. +<p> + +<pre> void MainWindow::init() + { + pb = new <a href="qprogressbar.html">QProgressBar</a>( statusBar() ); + <a name="x2513"></a> pb-><a href="qprogressbar.html#setPercentageVisible">setPercentageVisible</a>( FALSE ); + <a name="x2516"></a> pb-><a href="qwidget.html#hide">hide</a>(); + statusBar()->addWidget( pb, 0, TRUE ); + + connect( WebBrowser, SIGNAL(ProgressChange(int,int)), this, SLOT(setProgress(int,int)) ); + connect( WebBrowser, SIGNAL(StatusTextChange(const <a href="qstring.html">QString</a>&)), statusBar(), SLOT(message(const <a href="qstring.html">QString</a>&)) ); + + WebBrowser->dynamicCall( "GoHome()" ); + } +</pre>The init() function is implemented to create a progress bar as +the child of the status bar, and to connect Internet Explorer's +<tt>ProgressChange()</tt> and <tt>StatusTextChange()</tt> signals to the +respective displays. +<p> Finally the <tt>GoHome()</tt> function of Internet Explorer is invoked +using the <a href="qaxbase.html#dynamicCall">QAxBase::dynamicCall</a>() dynamicCall() API. +<p> <pre> void MainWindow::go() + { + actionStop->setEnabled( TRUE ); + WebBrowser->dynamicCall( "Navigate(const <a href="qstring.html">QString</a>&)", addressEdit->text() ); + } +</pre>The go() function calls the <tt>NavigateTo()</tt> function of Internet +Explorer, passing the text of the address bar as the argument. +<p> <pre> void MainWindow::setTitle( const <a href="qstring.html">QString</a> &title ) + { + setCaption( "Qt WebBrowser - " + title ); + } +</pre>The setTitle() slot is connected to the TitleChange() signal +of Internet Explorer, and updates the caption of the window +using the provided title string. +<p> <pre> void MainWindow::setProgress( int a, int b ) + { + if ( a <= 0 || b <= 0 ) { + pb-><a href="qwidget.html#hide">hide</a>(); + return; + } + pb-><a href="qwidget.html#show">show</a>(); + <a name="x2515"></a> pb-><a href="qprogressbar.html#setTotalSteps">setTotalSteps</a>( b ); + <a name="x2514"></a> pb-><a href="qprogressbar.html#setProgress">setProgress</a>( a ); + } + + void MainWindow::setCommandState( int cmd, bool on ) + { + switch ( cmd ) { + case 1: + actionForward->setEnabled( on ); + break; + case 2: + actionBack->setEnabled( on ); + break; + } + } + + void MainWindow::navigateBegin() + { + actionStop->setEnabled( TRUE ); + } + + void MainWindow::navigateComplete() + { + actionStop->setEnabled( FALSE ); + } +</pre>The setProgress(), setCommandState(), navigateBegin() and +navigateComplete() slots are connected to the respective +signals of Internet Explorer and update the user interface. +<p> The rest of the implementation is not related to <a href="activeqt.html#ActiveQt">ActiveQt</a> and +omitted for brevity. +<p> To build the example you must first build the +<a href="qaxcontainer.html">QAxContainer</a> library. +Then run your make tool in <tt>examples/webbrowser</tt> and +run the resulting <tt>webbrowser.exe</tt>. +<p>See also <a href="qaxcontainer-examples.html">The QAxContainer 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> |