--- /dev/null
+#ifndef ABOUTWINDOW_H
+#define ABOUTWINDOW_H
+
+#include <QDialog>
+#include <string>
+#include <vector>
+#include <sys/time.h>
+
+#include "mixer.h"
+
+namespace Ui {
+class AboutDialog;
+} // namespace Ui
+
+class AboutDialog : public QDialog
+{
+ Q_OBJECT
+
+public:
+ AboutDialog();
+
+private:
+ Ui::AboutDialog *ui;
+};
+
+#endif