Unreal Engine 4.15 Preview

[ryan20fun]

@Syed;656658

In 4.15.p2, I can no longer use win32 functions in C++ project such as:-

'GetLocalTime': identifier not found
'SYSTEMTIME': undeclared identifier
InterlockedIncrement': is not a member of '`global namespace'
'InterlockedIncrement': identifier not found

There are many others - but these are just some of them. I figure this has got to do with more efficient use of header files, but I cannot figure it out.

Try adding this to your header:

// Exclude rarely-used stuff from Windows headers
#define WIN32_LEAN_AND_MEAN
#define NOMINMAX

// Windows Header Files:
#include <windows.h>

That should solve your problem, The “NOMINMAX” is to remove the min/macros.

HTH