Easy GUI - Multiple Errors

I am trying to create a very simple GUI (first time trying to use GUIDE and new to Matlab), but no matter what I do, my code wont run and I cannot figure out what I am doing wrong. Please help!

Here is the code:

x=str2num(get(handles.input,'String'));
y=2*x;
yOut=num2str(y);
set(handles.output,'String',yOut);
guidata(hObject, handles)

Here are the error messages:

Error using hg.figure/set
The name 'String' is not an accessible property for an instance of class
'figure'.

Error in Test>solve_Callback (line 107)
set(handles.output,'String',yOut);

Error in gui_mainfcn (line 96)
        feval(varargin{:});

Error in Test (line 42)
    gui_mainfcn(gui_State, varargin{:});

Error in
@(hObject,eventdata)Test('solve_Callback',hObject,eventdata,guidata(hObject))

Error while evaluating uicontrol Callback

I even tried to follow closely couple GUI tutorials. I have done everything as described, and I still get multiple error messages. What is going on?

Thanks!

Answer 1

[Matt Fig]

Apparently

handles.output

is the handle to a figure object. What object were you trying to set the string to? Try this: Call the GUI with an output argument like this:

H = mygui;

Now look at H. This is the handles structure. You can tell which object is which by doing:

get(H.output,'type')  % Betting it returns figure.

etc.

[Dani]

Thanks, Matt!

The output handle was for a Static Text box.

I was not able to figure out exactly why my script(s) was not working, but after I redid everything without changing the default tag names, it somehow worked (still puzzled why).