How do I execute a callback function from another function file in MATLAB?
callback, matlab
Solution
From the result you got for the button callback, it appears that the callback has been created in the following way (just for example):
hButton = uicontrol(...,'Callback',{@button_callback,1,1,[1:6]});
where the callback function `button_callback` is defined as follows:
function button_callback(hObject,eventdata,a,b,c)
...
end
Notice that there are two extra arguments in the input argument list for the callback function: `hObject` (the handle of the object invoking the callback) and `eventdata` (a structure of event data).
If you want to invoke the function handle with the 3 additional arguments that should be passed to it (`1`, `1`, and a 1-by-6 array), you need to also pass arguments for the `hObject` and `eventdata` inputs. Here's how calling the function would look (using your variable `ans`):
ans{1}(hButton,[],ans{2:end});
You first get the function handle from the cell array (`ans{1}`) then call it using parentheses as you would any other function. For `hObject` you can pass the handle to the uicontrol object (or an empty value if it isn't needed), and for `eventdata` you can just pass an empty value. The additional values are then taken from the cell array as a comma-separated list (`ans{2:end}`) and each is passed to the function as a separate additional argument.
Problem
I have two functions: one which creates the UI with buttons, and another one from which I'd like to execute the same function as pressing the button does. When I dig into the figure with `get(gcf,'children')` I find the buttons, with a Callback property that looks like this: ``` ans = [function_handle] [ 1] [ 1] [1x6 double] ``` Now, as far as I understand, with the first array element I should be able to execute the same function as is executed when the button is pressed from the UI, but how do I do that? I tried everything, but nothing seems to work.