tutarie

>I want to know
>How to use a win api in VFP
>Any of you know some samples or tutorial site ?

Look in the libraries and faq here, there are lots of articles. Also check the Wiki topic http://fox.wikis.com/wc.dll?Wiki~CategoryWindowsAPI

>Can any of you give me some samples about calling a Mapi32.dll function

MAPI is is not WinAPI, MAPI is COM objects. There's a simple sample of using the MAPI controls over on my website. There's also some other samples here in the libraries.