MATLAB SIMULINK 7 - GRAPHICAL USER INTERFACE Manuel d'utilisateur télécharger pdf (Page 267)

An Address Book Reader

10-43

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.

Save_Callback Code Listing

function Save_Callback(hObject, eventdata, handles)

% Get the Tag of the menu selected

Tag = get(hObject, 'Tag');

% Get the address array

Addresses = handles.Addresses;

% Based on the item selected, take the appropriate action

switch Tag

case 'Save'

% Save to the default addrbook file

File = handles.LastFile;

save(File,'Addresses')

case 'Save_As'

% Allow the user to select the file name to save to

[filename, pathname] = uiputfile( ...

{'*.mat';'*.*'}, ...

'Save as');

% If 'Cancel' was selected then return

if isequal([filename,pathname],[0,0])

return

else

% Construct the full path and save

File = fullfile(pathname,filename);

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MATLAB SIMULINK 7 - GRAPHICAL USER INTERFACE Manuel d'utilisateur Page 267