How to use Setappdata/ Getappdata

Hello, I already found few Questions concerning my question but it does not help me. So what is the problem: I designed two GUI and I would like to make it work if you are changing the name of a pushbutton (used like a tab), in the second GUI it should change the name as well.

So, I already tried:

% --- Executes on button press in pushbutton31. function pushbutton31_Callback(hObject, eventdata, handles) % hObject handle to pushbutton31 (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) Tabname= get(handles.pushbutton8, 'String'); Daten= getappdata(handles.figure1, Tabname);

-> which means (to me), MatLab will store Tabname of figure 1.

Now, I am changing from GUI1 to GUI2, mfile changes as well.

 % --- Executes on button press in pushbutton31.
function pushbutton31_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton31 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

setappdata(handles.figure1, 'Daten', Tabname)

-> with this, I am taking the stored data from figure1 and I am calling especially Tabname.

But it does not work in general. I guess I have a basic problem with the notation or a definition is missing. I am receiving following error message: Undefined function or variable 'Tabname' or Reference to non-existent field. Is there anyone who can explain me how to use this commands right? Or should I use other commands?

I am thankful for every advice.

Answer 1

[Felix Oestrech]

 % % --------------------------------------------------------------------
function Bearbeiten_menu_Tabname_Callback(hObject, eventdata, handles)
% hObject    handle to Bearbeiten_menu_Tabname (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
Gebaeudetyp2= inputdlg( 'Name der Gebäudegruppe' , 'Tabname ändern' );
set(handles.pushbutton22, 'String', Gebaeudetyp2{1} );
Gebaeudetyp2= get(handles.pushbutton22, 'String');
setappdata(0, 'Gebaeudetyp2', Gebaeudetyp2);
  end

Gebaeudetyp2= getappdata(0, 'Gebaeudetyp2');
set(handles.pushbutton22, 'String', Gebaeudetyp2);

Finally, I found a solution and it works. Just in case someone else will have a similar problem, I am posting my solution.

I am using this getappdata- command in the opening function. Is it possible to delete the stored value?