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Pass newly created object's function to a timer object

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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.

Accepted Answer

Sean de Wolski
Sean de Wolski on 30 Jul 2012
Here is a class that does what you want from the description above. The only difference is that I placed the call to writeProgeress inside of an anonymous function.
What else is different with it from your class?
classdef WP < handle
properties
x
y
end
methods
function obj = WP(varargin)
obj.x = pi;
obj.y = 'hello world';
t = timer('TimerFcn',@(src,evt)obj.writeProgress,'Period',1,'ExecutionMode','fixedDelay');
start(t)
end
end
methods (Access=private)
function writeProgress(obj)
disp(obj.x);
disp(obj.y);
end
end
end
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