新增关于窗口

aboutwindow.h

@@ -0,0 +1,25 @@
+#ifndef ABOUTWINDOW_H
+#define ABOUTWINDOW_H
+
+#include <QMainWindow>
+
+namespace Ui {
+class AboutWindow;
+}
+
+class AboutWindow : public QMainWindow
+{
+    Q_OBJECT
+
+public:
+    explicit AboutWindow(QWidget *parent = nullptr);
+    ~AboutWindow();
+
+private slots:
+    void on_m_closeButton_clicked();
+
+private:
+    Ui::AboutWindow *ui;
+};
+
+#endif // ABOUTWINDOW_H