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Topic: Cannot find Callback function within m-file
Replies: 2   Last Post: Apr 10, 2013 5:02 PM

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kees de kapper

Posts: 71
Registered: 12/7/04
Cannot find Callback function within m-file
Posted: Mar 20, 2013 9:32 AM
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Hi All,

new question. Hope you could help me with this one:

I'm trying to make my MenuItems dynamically and add Callback functions to it:

> FigName ='Hello';
> set(handles.MenuItem, 'Callback', {eval(['@(hObject, handles) ,FigName,'_CallBack','(hObject,eventdata,guidata(hObject))'])});
>
>

And I have created a functionlike this:
> function handles = Hello_CallBack(hObject, eventdata, handles)
> % some code


If I run the code, and select the MenuItem then I will get the following error:
Undefined function 'Hello_CallBack' for input arguments of type 'struct'.
Error in gui_mainfcn (line 94)
[varargout{1:nargout}] = feval(varargin{:});

If I change the callback definition to:
> set(handles.MenuItem, 'Callback', {eval(['@',FigName,'_CallBack'])});

then I will get an error like this:
Undefined function 'Hello_CallBack' for input arguments of type 'double'.
Error while evaluating uimenu Callback

I've tried "which" to see whether the function was available, but indeed it wasn't listed there.

Why is the function not visible/available?

Many thanks!

Kind regards,

Kees



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