mirror of
https://github.com/xiaoyifang/goldendict-ng.git
synced 2024-11-30 17:24:08 +00:00
121 lines
5.3 KiB
HTML
121 lines
5.3 KiB
HTML
<?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">
|
|
<!-- console.qdoc -->
|
|
<head>
|
|
<title>A non-GUI 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 non-GUI example<br /><span class="subtitle"></span>
|
|
</h1>
|
|
<p>This example shows how to use the single-application functionality in a console application. It does not require the <tt>QtGui</tt> library at all.</p>
|
|
<p>The only differences from the GUI application usage demonstrated in the other examples are:</p>
|
|
<p>1) The <tt>.pro</tt> file should include <tt>qtsinglecoreapplication.pri</tt> instead of <tt>qtsingleapplication.pri</tt></p>
|
|
<p>2) The class name is <tt>QtSingleCoreApplication</tt> instead of <tt>QtSingleApplication</tt>.</p>
|
|
<p>3) No calls are made regarding window activation, for obvious reasons.</p>
|
|
<p>console.pro:</p>
|
|
<pre> TEMPLATE = app
|
|
CONFIG += console
|
|
SOURCES += main.cpp
|
|
include(../../src/qtsinglecoreapplication.pri)
|
|
QT -= gui</pre>
|
|
<p>main.cpp:</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 "qtsinglecoreapplication.h"
|
|
#include <QtCore/QDebug>
|
|
|
|
void report(const QString& msg)
|
|
{
|
|
qDebug("[%i] %s", (int)QCoreApplication::applicationPid(), qPrintable(msg));
|
|
}
|
|
|
|
class MainClass : public QObject
|
|
{
|
|
Q_OBJECT
|
|
public:
|
|
MainClass()
|
|
: QObject()
|
|
{}
|
|
|
|
public slots:
|
|
void handleMessage(const QString& message)
|
|
{
|
|
report( "Message received: \"" + message + "\"");
|
|
}
|
|
};
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
report("Starting up");
|
|
|
|
QtSingleCoreApplication app(argc, argv);
|
|
|
|
if (app.isRunning()) {
|
|
QString msg(QString("Hi master, I am %1.").arg(QCoreApplication::applicationPid()));
|
|
bool sentok = app.sendMessage(msg, 2000);
|
|
QString rep("Another instance is running, so I will exit.");
|
|
rep += sentok ? " Message sent ok." : " Message sending failed; the other instance may be frozen.";
|
|
report(rep);
|
|
return 0;
|
|
} else {
|
|
report("No other instance is running; so I will.");
|
|
MainClass mainObj;
|
|
QObject::connect(&app, SIGNAL(messageReceived(const QString&)),
|
|
&mainObj, SLOT(handleMessage(const QString&)));
|
|
return app.exec();
|
|
}
|
|
}
|
|
|
|
#include "main.moc"</pre>
|
|
<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>
|