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    }
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    }
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}
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}
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void SMScanner::on_actionPreferences_triggered(){
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void SMScanner::on_actionPreferences_triggered(){
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//    connect(&preferenceDialog, SIGNAL(accepted()), this, SLOT(onPreferencesChanged()));
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    preferenceDialog.show();
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    preferenceDialog.show();
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}
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}
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void SMScanner::onPreferencesChanged(){
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    // Stop capturing thread
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    connect(captureWorker, SIGNAL(finished()), captureWorker, SLOT(deleteLater()));
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    connect(captureWorker, SIGNAL(finished()), captureWorkerThread, SLOT(quit()));
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    QMetaObject::invokeMethod(captureWorker, "stopWork");
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    captureWorkerThread->quit();
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    captureWorkerThread->wait();
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    // Restart capturing thread
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    QMetaObject::invokeMethod(captureWorker, "setup");
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    QMetaObject::invokeMethod(captureWorker, "doWork");
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}
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void SMScanner::closeEvent(QCloseEvent *event){
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void SMScanner::closeEvent(QCloseEvent *event){
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    // Stop capturing thread
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    // Stop capturing thread
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    connect(captureWorker, SIGNAL(finished()), captureWorker, SLOT(deleteLater()));
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    connect(captureWorker, SIGNAL(finished()), captureWorker, SLOT(deleteLater()));
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    connect(captureWorker, SIGNAL(finished()), captureWorkerThread, SLOT(quit()));
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    connect(captureWorker, SIGNAL(finished()), captureWorkerThread, SLOT(quit()));