Matlab gui List box problem

Question

satendra kumar 2012-11-9

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https://ww2.mathworks.cn/matlabcentral/answers/53284-matlab-gui-list-box-problem

评论： Josef Rozinek 2013-9-26

I have two list boxes. In first list box i have listed 5 items. Now i have a select button to select item. The selected item should list in second list box. Pls help me out of this. Thanks

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Answer 1

Arthur 2012-11-9

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https://ww2.mathworks.cn/matlabcentral/answers/53284-matlab-gui-list-box-problem#answer_64885

编辑：Arthur 2012-11-9

在 MATLAB Online 中打开

Something like this sould work:

val = get(handles.listbox1,'Value'); %get selected item
str = get(handles.listbox1,'String'); %get content
set(handles.listbox2,'String',str{val}); %put item in 2nd listbox

or, to add the item to existing items in listbox2:

val = get(handles.listbox1,'Value'); %get selected item
str1 = get(handles.listbox1,'String'); %get content
str2 = get(handles.listbox2,'String')); %get content of listbox 2
set(handles.listbox2,'String',[str2 str1{val}]); %put item in 2nd listbox

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Josef Rozinek 2013-9-26

Hi, this worked for me nicely, however I found one weird thing I don't understand(maybe someone could enlighten me :-D). The above works, but only for one selection in the first listbox. For more selections I get the following error:

Error using set Invalid parameter/value pair arguments

The solution for me was to replace curly braces in selected_str{selected_val} with parentheses and then it works fine even for more selections.

Cheers

Josef

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