MATLAB ActiveX optional arguments

Question

there is an ActiveX function, which I want to call from MATLAB, e.g.

PrintOut([Background], [Append], [Range], [OutputFileName], [From], [To], [Item], [Copies],         


        

Answer 1

According to the Matlab documentation, you can skip optional input arguments by using an empty array instead (i.e. []).

So this would looks like:

hdlActiveX.PrintOut([],needed args,[],needed args);

Answer 2

I use NaN for default/optional parameters and it works for me. So my version would be:

hdlActiveX.PrintOut(NaN, needed args, NaN, needed args);

Honestly, I think both would work fine. Hope this helps!