新增关于窗口

aboutwindow.cpp

@@ -0,0 +1,20 @@
+#include "aboutwindow.h"
+#include "ui_aboutwindow.h"
+
+AboutWindow::AboutWindow(QWidget *parent) :
+    QMainWindow(parent),
+    ui(new Ui::AboutWindow)
+{
+    ui->setupUi(this);
+}
+
+AboutWindow::~AboutWindow()
+{
+    delete ui;
+}
+
+void AboutWindow::on_m_closeButton_clicked()
+{
+    this->close();
+}
+