Add qmodmaster and move udp app to applications

Applications/Qt-application_for_UDP_broadcast/mainwindow.h

@@ -0,0 +1,60 @@
+#ifndef MAINWINDOW_H
+#define MAINWINDOW_H
+
+#include <QMainWindow>
+#include <QtNetwork>
+#include <QtWidgets>
+#define QD qDebug() << __FILE__ << __LINE__
+
+#include "about.h"
+#include <QString>
+
+// UDP protocol:
+//REQ= Where are you?v1.0
+//ANS= XX:XX:XX:XX:XX:XX is present and my owner is YYYYYY ZZZZZZ
+#define UDP_PORT 64000
+#define UDP_REQUEST "Where are you?"
+#define UDP_ANS_OWNER "my owner is "
+
+QT_BEGIN_NAMESPACE
+namespace Ui { class MainWindow; }
+QT_END_NAMESPACE
+
+class MainWindow : public QMainWindow
+{
+    Q_OBJECT
+
+public:
+    MainWindow(QWidget *parent = nullptr);
+    ~MainWindow();
+
+private slots:
+    void SendRequest();
+    void processPendingDatagrams();
+
+    void on_pbRefresh_clicked();
+    void on_devices_itemDoubleClicked(QListWidgetItem *item);
+    void on_devices_customContextMenuRequested(const QPoint &pos);
+
+    void on_actionAbout_triggered();
+
+    void on_name_textEdited(const QString &arg1);
+
+    void on_surname_textEdited(const QString &arg1);
+
+    void on_comboBox_currentIndexChanged(int index);
+
+    void on_ChangeOwner_clicked();
+
+private:
+    Ui::MainWindow *ui;
+    QTimer * m_timer;
+    QUdpSocket *m_udpSocket = nullptr;
+    void processDatagram(QString msg, QString host);
+    QListWidgetItem *searchItem(QString MAC);
+    QString name;
+    QString surname;
+    QByteArray data;
+    qint8 func = 0;
+};
+#endif // MAINWINDOW_H