>Hi,
> Can anybody tell where could I get the full reference of WinAPI? I tried to look up from MSDN, but it doesn't show the actual value of constants or parameters for the WinAPI call. Where to get such info?

The Platform SDK in the MSDN, combined with the various .H files from VC++, is probably the mopst comprehensive source.

> Are there any books describe about WinAPi with example in market?

Not that are VFP-specific. Dan Appleman's books on the Win32 API for the VB crowd are a good starting point, but AFAIK, there is no single source other than the MSDN where all of MS's API is documented, and the API behaviors change. If you want to deal with the API in detail, I'd spend some time learning to at least read and understand C code.