Function BackupWrite 

pub unsafe extern "C" fn BackupWrite(
    hFile: HANDLE,
    lpBuffer: LPBYTE,
    nNumberOfBytesToWrite: DWORD,
    lpNumberOfBytesWritten: LPDWORD,
    bAbort: WINBOOL,
    bProcessSecurity: WINBOOL,
    lpContext: *mut LPVOID,
) -> WINBOOL