Function PowerEnumerate
pub unsafe fn PowerEnumerate(
rootpowerkey: Option<HKEY>,
schemeguid: Option<*const GUID>,
subgroupofpowersettingsguid: Option<*const GUID>,
accessflags: POWER_DATA_ACCESSOR,
index: u32,
buffer: Option<*mut u8>,
buffersize: *mut u32,
) -> WIN32_ERROR