first commit, correct read, correct config ini

Inc/mainwindow.h

@@ -0,0 +1,68 @@
+#ifndef MAINWINDOW_H
+#define MAINWINDOW_H
+
+#include <QWidget>
+#include <QComboBox>
+#include <QDoubleSpinBox>
+#include <QPushButton>
+#include <QLabel>
+#include <QMutex>
+#include <QTableWidget>
+#include <QSettings>
+#include <QVector>
+#include <QModbusTcpClient>
+#include <QModbusDataUnit>
+#include <QTimer>
+
+class ColoredSquare : public QWidget {
+    Q_OBJECT
+public:
+    explicit ColoredSquare(QWidget *parent = nullptr);
+    void setColor(const QColor& color);
+protected:
+    void paintEvent(QPaintEvent *event) override;
+private:
+    QColor m_color;
+};
+
+class Mainwindows : public QWidget {
+    Q_OBJECT
+
+public:
+    explicit Mainwindows(QWidget *parent = nullptr);
+    ~Mainwindows() override;
+
+private slots:
+    void onStateChanged(QModbusDevice::State state);
+    void onConnectButtonClicked();
+    void onReadReady();
+    void onPollTimer();
+
+private:
+    void createUIElements();
+    void initModbusConnection();
+    void writeRegister(int index);
+    void readRegisters();
+    void loadConfiguration();
+
+    QTableWidget* m_table;
+    QString m_ipAddress;
+    int m_port;
+    QVector<int> m_buttonRegisters;
+    QVector<int> m_indicatorRegisters;
+    int m_buttonCount;
+    int m_indicatorCount;
+    QVector<QPushButton*> m_buttons;
+    QVector<ColoredSquare*> m_squares;
+    QVector<int> m_colorIndices;
+
+    QModbusTcpClient* m_modbusClient;
+    QPushButton* m_connectButton;
+    bool m_connected;
+    int m_responseTimeout;
+    int m_connectTimeout;
+    int m_pollInterval;
+    QTimer* m_pollTimer;
+};
+
+#endif // MAINWINDOW_H