Function winapi::um::setupapi::SetupDiGetClassPropertyKeysExW

pub unsafe extern "system" fn SetupDiGetClassPropertyKeysExW(
    ClassGuid: *const GUID, 
    PropertyKeyArray: *mut DEVPROPKEY, 
    PropertyKeyCount: DWORD, 
    RequiredPropertyKeyCount: PDWORD, 
    Flags: DWORD, 
    MachineName: PCWSTR, 
    Reserved: PVOID
) -> BOOL