CellEditCallBack in popupmenu within a uitable

First, I want to say that I have read a number of topics about popupmenu and CellEditCallBack in uitable but I haven't found the answer for my problem. So, I raise a question here.

I created a uitable in my figure. In this table, I have nUE rows and each row has 2 columns, one fixed and one editable that is popupmenu. Popupmenu has 4 options: {'Select' 'Voice' 'Data' 'Video'}. The initial option is set to 'Select'. And I let users to change the value for each popupmenu such that if there's any 'Select' option, there's an error message showed up when they press a START button.

My solution is that whenever users change the value in popupmenu, a CellEditCallBack function is activated. It will save the data of the figure at that moment(guidata), increase the number of edited time (editCount) by 1. Then, it will scan all the rows in 2nd column, if there's any 'Select' option, the complete flag is set to false (defService = 0). And in START button CallBack, if defService = 0 then error.

Here is my source code:

      tableData = cell(nUE,2);
      for ue = 1:nUE
          tableData{ue} = num2str(ue);
          tableData{ue+nUE} = 'Select';
      end
      data.service = uitable('Parent',fig,...
          'Position',[1030 365 220 322],...
          'Data',tableData,...
          'FontSize',10,...
          'ColumnName',{'User','Service'},...
          'ColumnFormat',{'char',{'Select' 'Voice' 'Data' 'Video'}},...
          'ColumnEditable',[false true],...
          'ColumnWidth',{109},...
          'RowStriping','on',...
          'RowName',[],...
          'CellEditCallBack',@editService_Callback);
      guidata(fig,data);

      function editService_Callback(varargin)
          guidata(fig,data);
          editCount = editCount + 1;
          tableData = get(data.service,'Data');
          if editCount >= nUE
              defService = 1;
              for ue = 1:nUE
                  if strcmp(tableData{ue+nUE},'Select')
                      defService = 0;
                      break;
                  end
              end
          end
      end

      function start_Callback(varargin)
          if ~defService
              msgbox('Please DEFINE SERVICE FOR ALL USERS','Error','error');
              return;
          end
          % do stuff
      end

I know there's a problem with the last cell edited but it's acceptable for me to click another point in the uitable to update the value. The problem is even when I clicked another point in the uitable when I finished editing, changing all the value not 'Select', there's still an error message.

Could somebody help me with any idea? Or give me any example of using CellEditCallBack to update values in popupmenu into 'Data' of a uitable?

[Walter Roberson]

There is still an error message where?

Is defService a shared variable with the functions being nested?

Instead of using a variable, why not set() Enable 'off' for the start button?

[Viet-Anh Dinh]

I mean when I change all values in all popupmenu to make it not 'Select'.

It's said in Product Help that "In order for the CellEditCallback to be issued, after modifying a table cell the user must hit Enter or click somewhere else within the figure containing the table. Editing a cell's value and then clicking another figure or other window does not save the new value to the data table, and does not fire the CellEditCallback.". But this seems to be not true. Value in the last popupmenu will not be updated, even when I click somewhere within the uitable.

And because there's still a popupmenu with the value 'Select', then when I press START button, my program will show an error message.

I don't understand what you mean by "set() Enable 'off' for the start button" ???

[Viet-Anh Dinh]

this morning I compiled my program and it ran as I thought, I don't know the reason why yesterday it showed error. Maybe I'm a lucky man :v Thanks for your comments ;)