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getting input through matlab mouse call backs

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here is what I have so far. I am trying to use mouse pointer to get certain values from the figure. say I have a function like this
function mouseCallback()
h = plot(rand(10,1), 'o-');
set(h, 'ButtonDownFcn',@mouseCall)
function mouseCall(~,~)
p = get(gca,'CurrentPoint');
p = p(1,1:2);
title( sprintf('(%g,%g)',p) )
end
end
the function works fine now all I want do is to call this function to get the 'p' from another function. something like
function p = mouseCallback()
.....
.....
end
the problem is when I do so execution of the function doesnot terminate as it waits for next mouse callback. Is there anyway to terminate the callback and get the value.

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