Function winapi::um::cfgmgr32::CM_Get_Class_Key_Name_ExA

pub unsafe extern "system" fn CM_Get_Class_Key_Name_ExA(
    ClassGuid: LPGUID, 
    pszKeyName: LPSTR, 
    pulLength: PULONG, 
    ulFlags: ULONG, 
    hMachine: HMACHINE
) -> CONFIGRET