isATBQTRunning():

Use std::fstream to read /proc/<pid>/status, as the lines
end on '\r', not on '\n'.

utils.cpp

@@ -9,6 +9,9 @@
 #include <QDebug>
 #include <QDir>
 #include <QDirIterator>
+#include <QRegularExpression>
+
+#include <fstream>
 
 int Utils::read1stLineOfFile(QString fileName) {
     QFile f(fileName);
@@ -203,17 +206,19 @@ bool Utils::isATBQTRunning() {
                     QDirIterator::Subdirectories);
     while (it.hasNext()) {
         QString const &nextStatusFile = it.next();
-        QFile f(nextStatusFile);
-        if (f.exists()) {
-            if (f.open(QIODevice::ReadOnly | QIODevice::Text)) {
-                QTextStream in(&f);
-                in.setCodec("UTF-8");
-                while(!in.atEnd()) {
-                    // Name:   ATBQT
-                    QStringList line = in.readLine().split(':');
-                    if (line.size() == 2) {
-                        if (line[0].trimmed() == "Name") {
-                            if (line[1].trimmed() == "ATBQT") {
+        static const QRegularExpression re("^/proc/[0-9]{1,}/status");
+        QRegularExpressionMatch match = re.match(nextStatusFile);
+        if (match.hasMatch()) {
+            std::ifstream f(nextStatusFile.toStdString().c_str());
+            if (f.is_open()) {
+                std::string next;
+                while (std::getline(f, next)) {
+                    QString line = QString(next.c_str()).simplified();
+                    if (line.startsWith("Name")) {
+                        int const idx = line.indexOf(QChar(':'));
+                        if (idx != -1) {
+                            QString const binary = line.mid(idx+1).trimmed();
+                            if (binary == "ATBQT") {
                                 return true;
                             }
                         }