MATLAB Creating Graphical User Interfaces

9 Examples of GUIDE UIs

end

if exist(file,'file') == 2

data = load(file);

end

% Validate the MAT-file

% The file is valid if the variable is called "Addresses"

% and it has fields called "Name" and "Phone"

flds = fieldnames(data);

if (length(flds) == 1) && (strcmp(flds{1},'Addresses'))

fields = fieldnames(data.Addresses);

if (length(fields) == 2) && (strcmp(fields{1},'Name'))...

&& (strcmp(fields{2},'Phone'))

pass = 1;

end

end

% If the file is valid, display it

if pass

% Add Addresses to the handles structure

handles.Addresses = data.Addresses;

% Display the first entry

set(handles.Contact_Name,'String',data.Addresses(1).Name)

set(handles.Contact_Phone,'String',data.Addresses(1).Phone)

% Set the index pointer to 1

handles.Index = 1;

% Save the modified handles structure

guidata(handles.Address_Book,handles)

else

errordlg('Not a valid Address Book','Address Book Error')

end

UI Behavior

• “Open and Load MAT-File” on page 9- 11


• “Retrieve and Store Data” on page 9- 11


• “Data Update Confirmation” on page 9- 13


• “Paging Through Entries — Prev/Next” on page 9- 14


• “Save File” on page 9- 15


• “Clear UI Fields” on page 9- 17