MATLAB SIMULINK 7 - GRAPHICAL USER INTERFACE Especificações descarregar pdf (Página 205)

An Address Book Reader

5-39

Code Listing

function Contact_Phone_Callback(hObject, eventdata, handles)

Current_Phone = get(handles.Contact_Phone,'string');

% If either one is empty then return

if isempty(Current_Phone)

return

end

% Get the current list of addresses from the handles structure

Addresses = handles.Addresses;

Answer=questdlg('Do you want to change the phone number?', ...

'Change Phone Number', ...

'Yes','Cancel','Yes');

switch Answer

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 the Address Book — Prev/Next

The Prev and Next buttons page back and forth through the entries in the

address book. Both push buttons use the same callback,

Prev_Next_Callback.

You must set the

Callback property of both push buttons to call this

subfunction, as the following illustration of the

Prev push button Callback

property setting shows.

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MATLAB SIMULINK 7 - GRAPHICAL USER INTERFACE Especificações Página 205