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diff --git a/libs/qtsingleapplication/doc/html/qtsingleapplication-example-trivial.html b/libs/qtsingleapplication/doc/html/qtsingleapplication-example-trivial.html new file mode 100755 index 0000000..b3a1910 --- /dev/null +++ b/libs/qtsingleapplication/doc/html/qtsingleapplication-example-trivial.html @@ -0,0 +1,103 @@ +<?xml version="1.0" encoding="iso-8859-1"?> +<!DOCTYPE html + PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "DTD/xhtml1-strict.dtd"> +<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> +<!-- trivial.qdoc --> +<head> + <title>A Trivial Example</title> + <link href="classic.css" rel="stylesheet" type="text/css" /> +</head> +<body> +<table border="0" cellpadding="0" cellspacing="0" width="100%"> +<tr> +<td align="left" valign="top" width="32"><img src="images/qt-logo.png" align="left" width="57" height="67" border="0" /></td> +<td width="1"> </td><td class="postheader" valign="center"><a href="index.html"><font color="#004faf">Home</font></a></td> +</tr></table><h1 class="title">A Trivial Example<br /><span class="subtitle"></span> +</h1> +<p>The application in this example has a log-view that displays messages sent by further instances of the same application.</p> +<p>The example demonstrates the use of the <a href="qtsingleapplication.html">QtSingleApplication</a> class to detect and communicate with a running instance of the application using the sendMessage() API. The messageReceived() signal is used to display received messages in a <a href="http://qt.nokia.com/doc/4.6/qtextedit.html">QTextEdit</a> log.</p> +<pre><span class="comment"> /**************************************************************************** + ** + ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). + ** All rights reserved. + ** + ** Contact: Nokia Corporation (qt-info@nokia.com) + ** + ** This file is part of a Qt Solutions component. + ** + ** You may use this file under the terms of the BSD license as follows: + ** + ** "Redistribution and use in source and binary forms, with or without + ** modification, are permitted provided that the following conditions are + ** met: + ** * Redistributions of source code must retain the above copyright + ** notice, this list of conditions and the following disclaimer. + ** * Redistributions in binary form must reproduce the above copyright + ** notice, this list of conditions and the following disclaimer in + ** the documentation and/or other materials provided with the + ** distribution. + ** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor + ** the names of its contributors may be used to endorse or promote + ** products derived from this software without specific prior written + ** permission. + ** + ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." + ** + ****************************************************************************/</span> + + #include <qtsingleapplication.h> + #include <QtGui/QTextEdit> + + class TextEdit : public QTextEdit + { + Q_OBJECT + public: + TextEdit(QWidget *parent = 0) + : QTextEdit(parent) + {} + public slots: + void append(const QString &str) + { + QTextEdit::append(str); + } + }; + + #include "main.moc" + + int main(int argc, char **argv) + { + QtSingleApplication instance(argc, argv);</pre> +<p>The example has only the <tt>main</tt> entry point function. A <a href="qtsingleapplication.html">QtSingleApplication</a> object is created immediately.</p> +<pre> if (instance.sendMessage("Wake up!")) + return 0;</pre> +<p>If another instance of this application is already running, sendMessage() will succeed, and this instance just exits immediately.</p> +<pre> TextEdit logview; + logview.setReadOnly(true); + logview.show();</pre> +<p>Otherwise the instance continues as normal and creates the user interface.</p> +<pre> instance.setActivationWindow(&logview); + + QObject::connect(&instance, SIGNAL(messageReceived(const QString&)), + &logview, SLOT(append(const QString&))); + + return instance.exec();</pre> +<p>The <tt>logview</tt> object is also set as the application's activation window. Every time a message is received, the window will be raised and activated automatically.</p> +<p>The messageReceived() signal is also connected to the <a href="http://qt.nokia.com/doc/4.6/qtextedit.html">QTextEdit</a>'s append() slot. Every message received from further instances of this application will be displayed in the log.</p> +<p>Finally the event loop is entered.</p> +<p /><address><hr /><div align="center"> +<table width="100%" cellspacing="0" border="0"><tr class="address"> +<td width="30%" align="left">Copyright © 2010 Nokia Corporation and/or its subsidiary(-ies)</td> +<td width="40%" align="center"><a href="http://qt.nokia.com/doc/trademarks.html">Trademarks</a></td> +<td width="30%" align="right"><div align="right">Qt Solutions</div></td> +</tr></table></div></address></body> +</html> |