完成设置页面和退出页面，开卡页面的画图

mainwindow.h

@@ -0,0 +1,62 @@
+#ifndef MAINWINDOW_H
+#define MAINWINDOW_H
+
+#include <QMainWindow>
+#include <QCheckBox>
+#include <QLabel>
+#include <QStackedWidget>
+#include <QMessageBox>
+#include <QSqlDatabase>
+#include <QSqlQuery>
+
+#include <readerAPI.h>
+
+QT_BEGIN_NAMESPACE
+namespace Ui {
+class MainWindow;
+}
+QT_END_NAMESPACE
+
+class MainWindow : public QMainWindow
+{
+    Q_OBJECT
+
+public:
+    MainWindow(QWidget *parent = nullptr);
+    ~MainWindow();
+
+    void updateStatusBarComNumber();
+    bool ready();
+
+private slots:
+    void on_settingAction_triggered();
+    void on_quitAppAction_triggered();
+    void on_NewCardAction_triggered();
+
+    void on_connectReaderButton_clicked();
+    void on_confirmQuitButton_clicked();
+    void on_connectDatabaseButton_clicked();
+    void on_inventoryButton_clicked();
+
+
+
+private:
+    Ui::MainWindow *ui;
+    Reader reader;
+    QSqlDatabase db;
+    QString databaseIpAddr = "";
+    int databasePort = 3306;
+    QString databasePassword = "";
+    QString device = QString("未指定设备名");
+    bool depositAllowed = false;
+
+    QStatusBar *statusBar;
+    QStackedWidget *stackedWidget;
+
+    QCheckBox *readerConnectStatusCheckBox;
+    QLabel *comNumberLabel;
+    QCheckBox *databaseConnectStatusCheckBox;
+    QLabel *databaseLabel;
+    QLabel *deviceLabel;
+};
+#endif // MAINWINDOW_H