Register state_t enumeration only once

src/Lib/client.cpp

@@ -36,8 +36,6 @@ lc::Client::Client(const QString &argIP, const QString &argMAC,
                    unsigned short int argYPosition, const QString &argPingCmd)
     : ip{argIP}, mac{argMAC}, name{argName}, xPosition{argXPosition},
       yPosition{argYPosition}, protectedCycles{0} {
-  qRegisterMetaType<state_t>("STATE");
-
   if (!argPingCmd.isEmpty()) {
     pinger = new ClientPinger{ip, argPingCmd};
     pinger->moveToThread(&pingerThread);

src/main.cpp

@@ -28,6 +28,9 @@ std::unique_ptr<lc::Settings> settings;
 
 int main(int argc, char *argv[]) {
   QApplication a{argc, argv};
+
+  qRegisterMetaType<state_t>();
+
   settings.reset(new lc::Settings{QSettings{"Labcontrol", "Labcontrol"}});
   lc::MainWindow w;
   w.show();