Visual Studio drives me crazy and I am suspecting I am doing something wrong.
This is what I do: I installed Visual Studio (Pro '08) a long time ago, I installed the Windows SDK (Win 7 x64), someone emails me a project, it fails to build.
Invariably, it can not find windows.h. While it is easy enough to include C:\Program Files\Microsoft SDKs\Windows\v7.0\Include in the project settings of every single project, I feel that this may not be the proper way to do it. Is there a way to somehow make Visual Studio globally aware of these files?
I also tried to include the above directory in the path variable but that didn't change anything.
Also, it will randomly find windows.h but not winresrc.h in the same directory.
Edit:
It was a problem with my machine. Somehow, Visual Studio thought that my Windows SDK was in the wrong place. See accepted answer and comments for the fix.
This answer only applies to ancient versions of Visual Studio - see the more recent answers for modern versions.
You can set Visual Studio's global include path here:
Tools / Options / Projects and Solutions / VC++ Directories / Include files