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This is a pure extension and fully backwards compatible. * Adds support for running it as a pre-compiled library while still being able to choose my `QXxxApplication` class at build time. * Be able to decide at runtime whether to use the single instance stuff (without starting a server and so on).
54 lines
2.2 KiB
C++
54 lines
2.2 KiB
C++
// Copyright (c) Itay Grudev 2015 - 2023
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// Permission is not granted to use this software or any of the associated files
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// as sample data for the purposes of building machine learning models.
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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#include <singleapplication.h>
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#include "messagereceiver.h"
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int main(int argc, char *argv[])
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{
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QCoreApplication app( argc, argv );
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// Separate single instance object (that allows secondary instances)
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SingleApplication single_instance_guard( argc, argv, true );
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MessageReceiver msgReceiver;
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// If this is a secondary instance
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if( single_instance_guard.isSecondary() ) {
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single_instance_guard.sendMessage( app.arguments().join(' ').toUtf8() );
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qDebug() << "App already running.";
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qDebug() << "Primary instance PID: " << single_instance_guard.primaryPid();
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qDebug() << "Primary instance user: " << single_instance_guard.primaryUser();
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return 0;
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} else {
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QObject::connect(
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&single_instance_guard,
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&SingleApplication::receivedMessage,
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&msgReceiver,
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&MessageReceiver::receivedMessage
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);
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}
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return app.exec();
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}
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