error C2371: 'BOOKMARK' : redefinition; different basic types C:\Program Files\Microsoft SDKs\Windows\v6.0A\include\mapidefs.h 1142

When I Build 64 bit dll then gets above error.

I used two approach in link http://mariusbancila.ro/blog/2011/06...n-of-bookmark/

please help how to resolve above error.