get edit box value

I have created a GUI script in which the user will determine the number of edit text boxes. The user will fill these text-boxes. All the text boxes are assigned to a single callback function from which i want to read the string of these text-boxes.

f.e:

function Calback_Name(hObject, eventdata, handles)
String_Nr_1=(get(handles.tag-of-texbox-1, 'String'))
String_Nr_2=(get(handles.tag-of-texbox-2, 'String'))

However it seems that the get(handle.tag,'String') doesn not work when the text-boxes are created programmatically and not straight from GUIDE. Any idea?

[Jan]

Please do not only claim, that "it doesn't work", butexplain, why you think so. Do not post pseudo code, because the problem concerns the real code. Or did you really try to call the fields "tag-of-texbox-1"?

[DImitrios Tzelepis]

Here is the for loop which creates a number of text-boxes. Their number is DT_InW_Nr_Analog which is obtained from a text box.

    for  Analog_Nr_Index=1:1:DT_InW_Nr_Analog  

   % Create tag for different boxes  
    DT_Analog_Calback_Names=(char(strcat('DT_Analog_Variable_Callback_',num2str(Analog_Nr_Index,'%02d'))));   

    % Create edit boxes  
        DT_Analog_Channel_Variable_Text(Analog_Nr_Index) = uicontrol(MY_GUI_FIG,'Style','edit',...
                        'Tag',DT_Analog_Calback_Names,...
                        'String','Workspace Variable Name',...
                        'Position',[700 DT_Analog_Height_02 200 30],'FontSize',13,...
                        'Interruptible','on',...
                    'Callback',{@DT_Analog_Calback_Name}) 

DT_Analog_Height_02=DT_Analog_Height_02-35;
    end

Then i want to generate (automatically) the function that all these text boxes (number can be large or small according to the user input) will retur the content:

function DT_Analog_Calback_Name(hObject, eventdata,handles)
String_1=(get(handles.DT_Analog_Variable_Callback_01, 'String'))
String_2=(get(handles.DT_Analog_Variable_Callback_02, 'String'))
.
.
.

Then i get the following error:

Reference to non-existent field 'DT_Analog_Variable_Callback_01'.

However i tried to call the same way other edit text boxes which I generated in GUIDE, and they return their string. I seems that I cannot call the string from the text boxes I created programmatically.

Answer 1

[Jan]

Has the handles struct been modified after the callbacks are created? Then:

function Calback_Name(hObject, eventdata)
handles = guidata(hObject);
String_Nr_1 = get(handles.texbox1, 'String');
String_Nr_2 = get(handles.texbox2, 'String');