Increment variable as function of time a button is held down

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Alex V
Alex V 2012-4-27
Is there a way to somehow capture the amount of time that a button is held down, and use it to update, in real time, a variable? my specific interest is in using a button to spin a 3d figure. I can get it to do so, but only in increments (click,*spin n rads*,click,*spin n rads* etc).
I have looked for something like this and have been unable to find an answer.
thanks, Alex

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Jan
Jan 2012-4-27
You can use the 'WindowsButtonUpFcn' of the figure to catch the release of the button.
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Alex V
Alex V 2012-4-28
this is precisely what i knew must exist, hadn't thought to look for it in the figure properties, thank you.
so if you wanted to do this the code would be something like:
function button_callback(blahblah)
stop = 0
i = tic;
while stop = 0
handles.t = toc(i);
handles.tsum = handles.tsum+handles.t;
disp(handles.tsum)
stop = get(handles.button,'UserData');
pause(0.1)
end
WindowsButtonUpFcn_figure1(blah)
set(handles.button,'UserData',1);
and the code would behave by displaying the incremented time every 0.1s?
this seems like a really clumsy way of doing it, im sure there's a better way, could you suggest at least a direction? much obliged for the answer to the original question at least, either way.
Cheers,
Alex

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