Where we need access to the Windows types in engine, we wrap the include in:
#include "AllowWindowsPlatformTypes.h"
#include "MyWindowsStuff.h"
#include "HideWindowsPlatformTypes.h"
Where we need access to the Windows types in engine, we wrap the include in:
#include "AllowWindowsPlatformTypes.h"
#include "MyWindowsStuff.h"
#include "HideWindowsPlatformTypes.h"