Pop-Up Menu:

     The Value property of these objects is used to determine which of the selected items are in the popup menu objects. The coding example is shown below.

function popupmenu1_Callback (hObject, eventdata, handles)
val = get (hObject, 'Value');

switch val case 1% Actions to be performed when the first item is selected
  case 2% Actions to be performed while the second item is selected
% Callback block continuation and other commands

If the programmer wants to learn the string of the selected item, the following command lines can be used:

function popupmenu1_Callback (hObject, eventdata, handles)
val = get (hObject, 'Value');
string_list = get (hObject, 'String');
selected_string = string_list {val}; % Cell sequence translation
                                                        % to string
                                                         % Callback block continuation and other commands