wchar_t from char in mex

I am trying to call a library function which uses wchar_t* path.

How would I make this assignment?

wchar_t* path = "Some value" //Won't work

Also, if this were an input instead of a constant it is unclear as to what would need to be changed.

I've found a few links but it is really unclear as to what the answer to these ended up being:

http://www.mathworks.com/matlabcentral/answers/3198-convert-matlab-string-to-wchar-in-c-mex-under-windows-and-linux

http://www.mathworks.com/matlabcentral/newsreader/view_thread/301249

http://www.mathworks.com/matlabcentral/answers/63980

http://stackoverflow.com/questions/14942097/accessing-matlabs-unicode-strings-from-c

Thanks, Jim