How to get REG_MULTI_SZ in WINQUERYREG?

The function winqueryreg supports just strings (REG_SZ), expanded strings (REG_EXPAND_SZ) and 32-bit integer (REG_DWORD), but what should I do if I need to get a multistring value (REG_MULTI_SZ)?

All I've invent is:

[~, str] = dos('reg query "hklm\software\myprog" /v MY_KEY')

found = strfind(str, 'REG_MULTI_SZ')

str = str(found+12:end)  % I suppose there is just one multistring value

str = str(str~=' ')  % clear from spaces

found = strfind(str, '\0')

res{1} = str(1:found-1)  % and I suppose there is just one value found again

res{2} = str(found+2:end)

Apparently, this way isn't the best