title: MATLAB: create checkboxes and their callbacks in a loop for
body: <p>I would like to create a gui which reads all the files (the number of files changes for each case (ii)) in a folder, then the number of files (ii) creates ii checkboxes. If a checkbox is activated, the matching file is displayed on a graph. </p>
  
  <p>My issue is to create the callback in the loop for:</p>
  
  <pre><code>function main
  
  
  N=500;
  M=300;
  
  handles.fig=figure('Units', 'Pixels','Position',[100 100 N M]);
  
  handles.axes=axes('Units', 'Pixels','Position',[25 25 N-200 M-50]);
  
  for ii=1:4; %input exemple
  
  handles.check{ii}=uicontrol('style','checkbox','string','Display','position',[N-150-ii*20 M/2 150 50]);
  
  set(handles.check{ii},'Callback',{@checkbox_callback(ii), handles});
  end
  end
  
  for ii=1:4;
  
  function checkbox_callback(ii)(gcf, event_data, handles)
  val=get(handles.check(ii),'Value');
  if val
      x=1:10;
      y=1:10;
      plot(x,y)
  else
      grid off;
  end
  end
  end
  </code></pre>