Could nt get the result

f=figure;
c=uicontrol;
c.String='getrsf';
function getrsf_Callback(hObject, eventdata, handles)
% hObject    handle to msg_box (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
    demo;
end

Answer 1

[Walter Roberson]

c.Callback = @(s,e) getrsf_Callback(s, e, guidata(s))

That is to say, the String property of a uicontrol has no effect on callbacks: it is what the uicontrol displays.

When you create a gui using Guide then one of the things it does for you is to link in callbacks on your behalf. It does that by setting the Callback (or appropriate) property of the graphics objects saved in the fig file.

It also links the graphic object into handles on your behalf. It does that at the time it loads the gui by looking for Tag properties of graphic objects and creating fields in the handles structure for each valid Tag.

Note that these are two separate processes: callbacks saved as part of the object properties, and glue logic when the gui initializes that creates handles according to Tag.

When you create a graphics object yourself you need to set the callback property yourself. If you want you can also add the item into the handles structure.

[Sandhiya CSE]

what is s and e over here shuld i replace your given line with that function i my code

[Walter Roberson]

c.Callback = @(hObject, eventdata) getrsf_Callback(hObject, eventdata, guidata(s))

shuld i replace your given line with that function i my code

No, this code is what is needed if you want to invoke your

function getrsf_Callback(hObject, eventdata, handles)

as a callback. Only change it if you name your callback something different.

Note: you will also want to set the Position property of your uicontrol.

[Image Analyst]

Sandhiya, Did you just cut and paste small snippets of an application you'd created in GUIDE? If so, attach the .m and .fig file. Or is that your whole program?