Listbox MATLAB GUI issue : How to pass two list box values to the 3rd listbox

Hi everyone,

I am trying to pass 2 list box values to the third list box but it seems I am not getting what I am looking for.

Can anyone guide me in this matter please.

Answer 1

[Walter Roberson]

In the place you fetch the strings and values for the listboxes, also fetch the Enable property, and if it is not on then use the value (index) for the first listbox to index the second listbox as well.

[Tania]

I am close to the solution. If I select one from listbox1 and then one from listbox2 then I can get the result. It is working perfectly.

However, if I disable listbox2 and then select one from listbox1 I do not get anything.

How can I fix this for selecting one from listbox1 only and get the same result

Please help me.

[Walter Roberson]

function pushbutton1_Callback(hObject, eventdata, handles)
str1 = cellstr(get(handles.listbox1, 'string'));
val1 = get(handles.listbox1, 'value');

str2 = cellstr(get(handles.listbox2, 'string'));
val2 = get(handles.listbox2, 'value');

if isempty(val1)
   selection1 = '';
 else
   selection1 = str1{val1};
end

enable_state2 = get(handles.listbox2, 'Enable');

if ~strcmp(enable_state2, 'on')
  val2 = val1;
end

if isempty(val2)
   selection2 = '';
 else
   selection2 = str2{val2};
end

combined_selection = {selection1; selection2};
set(handles.listbox3, 'string', combined_selection);

[Tania]

Great help.

Thank you very much.