//@author A0094446X
#pragma once
#ifndef YOU_GUI_STDAFX_H_
#define YOU_GUI_STDAFX_H_

#include <memory>
#include <QApplication>
#include <QList>
#include <QWidget>
#include <QtWidgets>

#include <boost/date_time/gregorian/greg_month.hpp>
#include <boost/date_time/posix_time/posix_time.hpp>

#endif  // YOU_GUI_STDAFX_H_

//@author A0094446X
#pragma once
#ifndef YOU_GUI_STDAFX_H_
#define YOU_GUI_STDAFX_H_
#include <QtWidgets>
#endif  // YOU_GUI_STDAFX_H_

--- 
+++ 
@@ -2,5 +2,14 @@
 #pragma once
 #ifndef YOU_GUI_STDAFX_H_
 #define YOU_GUI_STDAFX_H_
+
+#include <memory>
+#include <QApplication>
+#include <QList>
+#include <QWidget>
 #include <QtWidgets>
+
+#include <boost/date_time/gregorian/greg_month.hpp>
+#include <boost/date_time/posix_time/posix_time.hpp>
+
 #endif  // YOU_GUI_STDAFX_H_
Add more files to the PCH for faster compiles.
