addlistener for an array

In a GUI, I would like a function to be called whenever a certain variable stored in "handles" is changed (handles.times lets say). I tried using addlistener() directly on an array, which doesn't work. I think I can create a class and do it that way, but it seems like a lot. I'm looking for SPECIFIC examples. Reasoning for this is I have a GUI that is a slave GUI to a master GUI. Whenever a certain value changes in the slave, I want it to automatically update the master GUI.

Answer 1

[Walter Roberson]

It might be easier to write a small wrapper routine such as

function handles = updatehandles(handles, field, value)
   handles.(field) = value;
   guidata(handles.mastergui, handles);
end

and then use updatehandles() instead of a plain assignment.