Error C1083: Cannot open include file: "mex.h": no such file or directory

Question

I just installed Matlab 2014 and Microsoft Visual Studio Professional 2013. I already installed the mex compiler in my matlab and tested it with a simple mex file. But, when I want to debug a project in Visual Studio and comes to debug the mex file, I get the following error:

Error 1 Error C1083: Cannot open include file: "mex.h": no such file or directory

Can someone help me get rid of this error.

Thank.