问题：POST一个页面如http://127.0.0.1/post.php HTTP body为user=aaa&pass=bbb时，INTERNET_BUFFERS的dwBufferLength返回正确的长度17，但是lpReadBuff有时为空，有时为乱码
崩溃了，MSDN上看到这句话。。。
[code=html]Note The HttpSendRequestA function represents headers as ISO-8859-1 characters not ANSI characters. The HttpSendRequestW function represents headers as ISO-8859-1 characters converted to UTF-16LE characters. As a result, it is never safe to use
the HttpSendRequestW function when the headers to be added can contain non-ASCII characters. Instead, an application can use the MultiByteToWideChar and WideCharToMultiByte functions with a Codepage parameter set to 28591 to map between ANSI characters and
UTF-16LE characters. [/code]
当时没细看这段话，原来我POST的字符串定义的是unicode，一定要转换成UTF8再调用HttpSendRequest！！！！错误诡异的很啊！！！