Getting BIOS Vendor

[Dufresne]

Hi!
I'm trying to write a code which gets BIOS brand like famous tool CPU-Z.
What i've found is this, "Windows keeps BIOS info in a registery key which is located at HKEY_LOCAL_MACHINE\HARDWARE\DESCRIPTION\System key named SystemBiosVersion"
I've a c++ class which read a registery key ,but there's no brand name in SystemBiosVersion

My question is , how can i find BIOS brand ?
I need a c++ code which tells bios brand,

Thanks in Advance