SendMessage API call

Hello
http://www.computerworld.com/action/article.do?command=viewArticleBasic&articleId=9012149
May someone explain about "SendMessage API call"?
Thanks
[179 byte] By [Abalfazl] at [2007-11-20 7:13:31]
# 1 Re: SendMessage API call
Start off by reading here http://msdn2.microsoft.com/en-us/library/ms644950.aspx
S_M_A at 2007-11-10 3:39:25 >