Specifications

5 GUI Applications
5-26
end
set(handles.ResultsList,'String',ResultsStr);
% Store the new ResultsData
handles.ResultsData = ResultsData;
guidata(hObject, handles)
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));