MATLAB: How to get data from a variable number of Edit Text box in Matlab GUI

guimatlab guiuicontrol

Hello everyone,
I am creating a GUI where a variable number of edit box is created based on the number entered from the user. Then I need to get the data written in each edit box. To do that I created a cycle for where N edit text boxes are generated using uicontrol.
for K=1:N
    edit(K) = uicontrol('Style', 'edit', 'String', '', 'Units', 'Pixels', 'Position', [175 ypos 110 30],'callback',@thickness); 
end
The problem is that I cannot get the values from each box because it gives me only the value written in the last box.
function pushbutton2_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton2 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
function []=thickness(hObject, eventdata, handles)
val=get(hObject,'string')
setappdata(0, 'value',val);
Do you have any suggestion how to save the data from all the boxes for example in a array? Thank you in advance

Best Answer

You will need to pass the array of handles edit to the callback/function where you want to access them all, and either:
  • loop over the handles just like when creating the edit boxes, or
  • simply get all values at once: get(edit,'String')
What you are doing now will only access one edit box, because when the callback thickness is called the input hObject only contains the handle for that one edit box that triggered the callback, not for all of the handles. Thus you need to pass all the handles yourself if you want to access them all at once.
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