Let timer access another object's function

I created a class which reads a file as soon as an object is created. In order to display the progress of reading process, I created a public function (which I prefered to be private by the way). Let's call this function writeProgress,

However, after starting the timer, I receive an warning message: "feval: Undefined function or method 'obj.writeProgress' for input arguments of type 'timer'".

The timer has been initialized like this:

t = timer('TimerFcn',@obj.writeProgress,'Period',1,'ExecutionMode','fixedDelay');

How can I pass the function "writeProgress"? Write progress needs to be a class member as it has to access private data and I'd rather prefer it to be private itself.

[Sean de Wolski]

duplicate of http://www.mathworks.com/matlabcentral/answers/44847-pass-newly-created-object-s-function-to-a-timer-object

Answer 1

[per isakson]

This works with R2012a

classdef test_timer < handle
    properties
        t
    end
    methods
        function this = test_timer()
            this.t = timer( 'TimerFcn',@(s,e) writeProgress(this,s,e) ...
                        ,   'Period'        , 1                     ...
                        ,   'ExecutionMode' , 'fixedDelay'          );
            start( this.t )
        end
    end
    methods ( Access = private )
        function writeProgress( this, varargin ) %#ok<MANU>
            disp('writeProgress')
        end
     end
end

I cannot say why I use this syntax in my code.