Display command window data in gui matlab

Hello, Here is my code,

% --- Executes on button press in process.
function process_Callback(hObject, eventdata, handles)
% hObject    handle to process (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
diary off;
warning ('off','all');
diary('preprocessDetails.txt');
set(handles.process, 'Enable', 'off');
diary on;
handles.d{1} = 'Select text files with image paths...';
guidata(hObject, handles);
set(handles.list, 'String', handles.d);

fid = fopen('preprocessDetails.txt');
handles.d{2} = 'Extracting images...';
guidata(hObject, handles);

run preprocess; %this file writes intermediate training data to command window

set(handles.list, 'String', handles.d);

indic = 3;
while 1
         handles.tline = fgetl(fid);
         guidata(hObject, handles);

           handles.d{indic}=handles.tline;
           guidata(hObject, handles);

           if ~ischar(handles.tline) 
               break
           end

           indic = indic + 1;
  end
  diary off;
  fclose(fid);
  set(handles.list,'string',handles.d); 
  set(handles.list, 'Value', 1);
  delete preprocessDetails.txt;
  set(handles.process, 'Enable', 'On');

warning ('on','all');

I want to write the diary entries into the listbox simultaneously as the preprocess is getting executed. Is there a way to do it?

Thank You.

Answer 1

[Jan]

No, this cannot work. The diary file is written in buffered mode, such that it is even not written simultaneously with the processing to the disk. Therefore it is impossible to read it simultaneously.

It would be much easier in your script preprocess would not write to the command window by disp or implicitly by omitting the trailing semicolon, but uses a specific output function. Then this function could be modified to add a copy of the output to the wanted uicontrol also.

[Tejal]

What is this specific output function? and then how do I add a copy to the listbox? Can you please elaborate Sir, I'm new to Matlab. Thanks alot Sir.

[Tejal]

Thanks for the solution, just assigned the handle to the workspace and accessed it from a function. Thank you.

[Michele]

Dear Tejal, can you please write how did you solve it at the end? thanks