Function winapi::um::winspool::EnumPrinterDataExW

pub unsafe extern "system" fn EnumPrinterDataExW(
    hPrinter: HANDLE, 
    pKeyName: LPCWSTR, 
    pEnumValues: LPBYTE, 
    cbEnumValues: DWORD, 
    pcbEnumValues: LPDWORD, 
    pnEnumValues: LPDWORD
) -> DWORD