MATLAB SIMULINK 7 - GRAPHICAL USER INTERFACE Podręcznik Użytkownika Pobierz pdf (Strona 143)

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Add Components to the GUI

The popup’s callback controls its behavior. GUIDE generates this much of

the callback.

function popupm enu1 _Callback(hObject, eventdata, handles)

% hObject handle to popupmenu1 (see GCBO)

% eventdata re serv ed - to be defi ned in a future ver sion of MATLAB

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

% Hints: contents = get(hOb ject,'String') returns popupmenu1

% contents as cell array

% contents{get(hObject,'Value')} returns selected ite m

% from popupmen u1

The callbacks’s code adds these statements.

contents = get(hObject, 'Str ing');

selectedText = contents{get(h Obje ct,'Value')};

colormapStatus = [selectedText ' colormap'];

set(handles.textStatus, 'string', colormapStatus);

colormap(selectedText)

The String data is retrieved as a cell array and assigned to contents.The

Value property indexes the member of contents that the user just selected to

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