That is to say, every time when we create a MATLAB GUI, there will be a 'handles' in its opening function:
GUI_name_OpeningFcn(hObject, eventdata, handles, varagin)
I declared some global variables in the handles here. However, when we add some extra components to this GUI, for each Callback functions, there will be a local handles like:
function Button_Callback(hObject, eventdata, handles)
So my questions is, what if I want to use the global handles properties in the local Callback function? How do I differentiate two types of handles (i.e., global vs. local)?