The example below shows how to isolate the selected items using the callback function to the listbox. If you produced the listbox using GUIDE, focus on the callback function in my example and skip the first half that produces the listbox.
% Create listbox
function myList
c = dialog();
listbox1 = uicontrol('Parent',c,...
'Style','listbox',...
'Position',[90 90 100 100],...
'Min', 0, ...
'Max',3,...
'String',{'Lancaster', 'Cincinnati', 'Sofia', 'Rochester'},...
'Callback', @listbox1_Callback);
% Callback function
function listbox1_Callback(hObject, eventdata)
mySelection = hObject.String(hObject.Value);
if length(mySelection)<3
return
end
opt1 = mySelection{1};
opt2 = mySelection{2};
opt3 = mySelection{3};
*Note that you'll need to adapt the callback function if the user is allowed to select less or more than 3 options.
