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

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Tania
Tania 2015-9-16
编辑： Tania 2015-9-19
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.

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Walter Roberson
Walter Roberson 2015-9-16
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.
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Walter Roberson
Walter Roberson 2015-9-16
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);

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