Specifications

5 Application Examples
5-50
set(handles.Contact_Name,'string',Current_Name)
set(handles.Contact_Phone,'string',Current_Phone)
% Update the index pointer to reflect the new index
handles.Index = i;
guidata(h,handles)
Saving Changes to the Address Book from the Menu
When you make changes to an address book, you need to save the current
MAT-file, or save it as a new MAT-file. The
File submenus Save and Save As
enable you to do this. These menus, created with the Menu Editor, use the
same callback,
Save_Callback.
The callback uses the menu
Tag property to identify whether Save or Save As
is the callback object (i.e., the object whose handle is passed in as the first
argument to the callback function). You specify the menu’s
Tag property with
the Menu Editor.
Saving the Addresses Structure
The handles structure contains the Addresses structure, which you must save
(
handles.Addresses) as well as the name of the currently loaded MAT-file
(
handles.LastFile). When the user makes changes to the name or number,
the
Contact_Name_Callback or the Contact_Phone_Callback updates
handles.Addresses.
Saving the MAT-File
If the user selects Save, the save command is called to save the current
MAT-file with the new names and phone numbers.
If the user selects
Save As, a dialog is displayed (uiputfile) that enables the
user to select the name of an existing MAT-file or specify a new file. The dialog
returns the selected filename and path. The final steps include:
•Using
fullfile to create a platform-independent pathname.
•Calling
save to save the new data in the MAT-file.
•Updating the
handles structure to contain the new MAT-file name.
•Calling
guidata to save the handles structure.