Function winapi::um::setupapi::SetupDiClassGuidsFromNameExA

pub unsafe extern "system" fn SetupDiClassGuidsFromNameExA(
    ClassName: PCSTR, 
    ClassGuidList: LPGUID, 
    ClassGuidListSize: DWORD, 
    RequiredSize: PDWORD, 
    MachineName: PCSTR, 
    Reserved: PVOID
) -> BOOL