WINVER param needs update.

[russellfei]

For anyone who wants to compile CxImage using visual studio 2017, the definition of WINNT in StdAfx.h (in demo and demoDLL) should be changed to the following:

#ifndef WINVER 
#define WINVER  0x0602
#endif

After then, all should be good to generate your desired CxImage library.

For the moment, this version is the only project that can yield .dlls under Win10 + VS2017. If there is any other version of CxImage could also be painlessly compiled on such platform, please let me know.

Finally, thanks @wavescholar for sharing this.

Regards,
russellfei