Compile error in 'winbase.h'

Question

I get the following error with a Windows file when compiling winbase.h.

Not sure why I get a syntax error and the compiler shows many more:

Answer 1

Are you including directly?

You shouldn't - it expects to have some things defined/declared before it's processed. Specifically in this case the identifier ULONG_PTR which is declared as a typedef in intsafe.h.

Include .