programmatic GUI callback function

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I want to access the GUI control from the call back function. how can I do this. I got the below code from Matlab help but it gives an error when executed. How can I access the slider from the call back function.
function mygui()
function display_slider_value(hObject,callbackdata)
newval = num2str(hObject.Value);
disp(['Slider moved to ' newval]);

Accepted Answer

Geoff Hayes
Geoff Hayes on 24 Dec 2014
Akshata - what is the error message? Note that if you are trying to get the current value of the slider, you could try using
newval = num2str(get(hObject,'Value'));
The above assumes that the error has something to do with the current line that gets the newval.
Chandrasekhar on 24 Dec 2014
Thanks for the reply. It worked I am using 2012b

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More Answers (1)

Sean de Wolski
Sean de Wolski on 24 Dec 2014
I fyou're using a version of MATLAB < R2014b, hObject.Value won't work. That syntax is added in R2014b.
If your company/university if current on maintenance, you should be able to upgrade at no additional cost. If not, use get(hObject,'Value')


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