Let timer access another object's function

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Vincent
Vincent 2012-7-30
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.

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回答（1 个）

per isakson
per isakson 2012-7-31
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.

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