MATLAB Creating Graphical User Interfaces

9 Examples of GUIDE UIs

case 'Yes'

% If no name match was found create a new contact

Addresses(handles.Index).Phone = Current_Phone;

handles.Addresses = Addresses;

guidata(hObject,handles)

return

case 'Cancel'

% Revert back to the original number

set(handles.Contact_Phone,'String',Addresses(handles.Index).Phone)

return

end

Paging Through Entries — Prev/Next

By clicking the Prev and Next buttons you can page back and forth through the

entries in the address book. The Callback property of both push buttons are set to call

“Prev_Next_Callback” on page 9-14 in address_book.m.

The Prev_Next_Callback defines an additional argument, str, that indicates which

button, Prev or Next, is clicked. The Prev button Callback property includes 'Prev'

as the last argument. The Next button Callback string includes 'Next' as the last

argument. The value of str is used in case statements to implement each button's

function.

The Prev_Next_Callback gets the current index pointer and the addresses from

the handles structure and, depending on which button you click, the index pointer

decrements or increments and the corresponding address and phone number display. The

final step stores the new value for the index pointer in the handles structure and saves

the updated structure using guidata.

Prev_Next_Callback

function Prev_Next_Callback(hObject, eventdata, handles, str)

% Get the index pointer and the addresses

index = handles.Index;

Addresses = handles.Addresses;

% Depending on whether Prev or Next was clicked,

% change the display

switch str

case 'Prev'

% Decrease the index by one

i = index - 1;

% If the index is less than one then set