Creating Graphical User Interfaces

Removing Results from the List Box

The GUI Remove button callback deletes any selected item from the Results list list box. It also deletes the corresponding run data from the handles structure. When a user clicks on the Remove button, the callback executes the following steps:

• Determines which list box items are selected when a user clicks on the Remove button and removes these items from the list box String property by setting each item to the empty matrix [].
• Removes the deleted data from the handles structure.
• Displays the string <empty> and disables the Remove and Plot buttons (using the Enable property), if all the items in the list box are removed.
• Save the changes to the handles structure (guidata).

Here is the Remove button callback.

• function RemoveButton_Callback(hObject, eventdata, handles)
  currentVal = get(handles.ResultsList,'Value');
  resultsStr = get(handles.ResultsList,'String');
  numResults = size(resultsStr,1);
  % Remove the data and list entry for the selected value
  resultsStr(currentVal) =[];
  handles.ResultsData(currentVal)=[];
  % If there are no other entries, disable the Remove and Plot 
  button
  % and change the list sting to <empty>
  if isequal(numResults,length(currentVal)),
      resultsStr = {'<empty>'};
      currentVal = 1;
      
  set([handles.RemoveButton,handles.PlotButton],'Enable','off')
  end
  % Ensure that list box Value is valid, then reset Value and String
  currentVal = min(currentVal,size(resultsStr,1));
  set(handles.ResultsList,'Value',currentVal,'String',resultsStr)
  % Store the new ResultsData
  guidata(hObject, handles)
  

Running the Simulation from the GUI

Plotting the Results Data