Function OpenVirtualDisk 

pub unsafe extern "C" fn OpenVirtualDisk(
    VirtualStorageType: PVIRTUAL_STORAGE_TYPE,
    Path: PCWSTR,
    VirtualDiskAccessMask: VIRTUAL_DISK_ACCESS_MASK,
    Flags: OPEN_VIRTUAL_DISK_FLAG,
    Parameters: POPEN_VIRTUAL_DISK_PARAMETERS,
    Handle: PHANDLE,
) -> DWORD