MATLAB SIMULINK 7 - GRAPHICAL USER INTERFACE Guia do Utilizador descarregar pdf (Página 431)

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List Box Director y Reader (GUIDE)

% hObject handle to figure

% eventdata reserved - to be defined in a future v ersion of MATLAB

% handles structure with handles and user data (see GUIDATA)

% varargin command line arguments to untitled (see VARARGIN)

% Choose default command line output for lbox2

handles.output = hObject;

% Update handles structure

guidata(hObject, h andles);

if nargin == 3,

initial_dir = pwd;

elseif nargin > 4

if strcmpi(varargin{1} ,'dir')

if exist(varargin{2},'dir' )

initial_dir = varargin{2};

else

errordlg({'Input argu ment must be a valid',...

'folder'},'Input Ar gument Error!')

return

end

else

errordlg('Unrecognized inp ut argument',...

'Input Argument Error!');

return;

end

% Populate the listbox

load_listbox(initial_dir,handles)

Load the List Box

This example uses a subfunction to load items into the list box. This

subfunction accepts the path to a folder and the

handles structure as input

arguments and performs these steps:

• Change to the specified folder so that the GUI can navigate up and down

the tree, as required.

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