Edit box in Gui app

I am working on an app in GUIDE matlab. I want to display some information (1st cell in a field of a structure) in an editbox in the main figure of GUI. I was using the followinf code, which doesn't work (no change to the edit text box):

function edit1_Callback(hObject, eventdata, handles)

% hObject handle to edit1 (see GCBO)

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

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

MyData=handles.MyData;

handles.edit1 = edit1;

name=MyData.XXX.subsysNames(1,1)

set(handles.edit1,'String',cell2str(name));

guidata(hObject, handles)

(I suspect that I might be using the handles wrong but I am not sure. Could somebody point me in the right direction? ) How do I update the edit box?

Thanks!

Answer 1

[Dennis]

Do you get any error messages?

You are overwriting the handle of your edit box, thus you use the wrong handle when you try to update it:

handles.edit1 = edit1; % this should throw an error unless you have an edit1 function somewhere
edit1=handles.edit1; %this would be okayish, but not necessary

I am not aware of any cell2str function. Here is a small example what might work:

handles.MyData{1}=123;
handles.edit1=uicontrol('style','edit');
set(handles.edit1,'callback',{@edit1_cb,handles})


function edit1_cb(hObj,~,handles)
set(handles.edit1,'string',num2str(handles.MyData{1}))
%set(hObj,'string',num2str(handles.MyData{1})) %this would work aswell
end

[Wiktoria Glogowska]

I am not getting any error message.

handles.edit1 = edit1; doesn't give me any errors either

Still after applying your suggestion the edit text box isn't updated. Maybe I am using it wrong... is the function edit1_cb supposed to be embedded in function edit1_Callback(hObject, eventdata, handles) or directly after?

[Dennis]

Actually it is a replacement.

I think your callback might not trigger, to trigger the callback of an edit box place the cursor inside the box and press 'enter'.

[Wiktoria Glogowska]

It worked when I changed cell2str to cellstr and pressed Enter. So my question now is why it was be not triggered? What to do to trigger the callback without pressing ENTER? I would like loading of the data (different callback function) to be the 'triggering event' for the text to appear (immediately once the data is loaded the edit box is filled).

[Dennis]

In that case you can simply change the text of the edit field inside the callback that loads your data.

[Wiktoria Glogowska]

Thanks for help!!