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Listbox content from structure hierarchy (GUIDE)

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Manuel
Manuel on 30 Jul 2013
I have a listbox in which one I would like to set as content the subfield names of a structure.
Example: 'Database' is the structure which have inside the fieldnames Car, Bus and Motorbike. These fieldnames are 1x1 struct (e.g Database.Car) and are used as subfields.
Then I want to create a listbox which contains the subfields and mantain this listbox updated since different subfields will be added.
Thanks in advance,

Accepted Answer

Jan
Jan on 31 Jul 2013
Here "Car" etc are the "fields", not the "subfields" (which would mean something like: DataBase.Vehicle.Car).
DataBase.Car = 1;
DataBase.Bus = 2;
DataBase.Motorbike = 3;
List = fieldnames(DataBase);
uicontrol('Style', 'listbox', 'String', List);
Keeping the listbox "updated" when the struct is changed, is very complicated. You need an object oriented approach to start a callback, when the data are changed. But you can fake it by not adding further fields manually, but when you use a dedicated function for this:
function S = myAddField(S, Field, Data)
S.(Field) = Data;
updateGui(S); % <-- Implementation depends on your GUI
  3 Comments
Manuel
Manuel on 7 Aug 2013
Problem solve, can be done inside the 'CreateFcn(hObject, eventdata, handles)' function as:
List = fieldnames(Database);
set(hObject,'String',List);

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