Question

I have two functions:

function [] = func_one()
     S.pb = uicontrol('style','push','unit','pix','posit',[20 20 260 30],
                      'string','Print Choices','callback',{@func_two,S});

and I have the second function:

   function [a] = func_two(varargin)
       a = 'alon';
   end

I want func_one to return the variable a of func_two. How can I do that please?

I tried:

 function [a] = func_one()

But I guess I have to do something with ‘callback’,{@func_two,S})

Thank you all!

Answer 1

If, as you say, you want func_one to return the value a in func_two then the easiest way to do this without using a callback is:

function [a] = func_one()
     S.pb = uicontrol('style','push','unit','pix','posit',[20 20 260 30],
                      'string','Print Choices');

     a = func_two()

The above will allow you to say run a=func_one and a will be the string 'alon'.

If you really really want func_two() to be a callback of your pushbutton, and you want a='alon' to be assigned in the workspace of func_one (the function that calls func_two) then put this in func_two

assignin('caller','a',a)

And if neither is what you want, then maybe you can indicate why you want func_one to return what func_two returns – like the exact interaction you are hoping to have with your GUI and how it differs from what you’re actually experiencing.