Creating Graphical User Interfaces

Executing a Callback

This is the feval switchyard that enables modaldlg to execute the callback subfunctions. It relies on the fact that when modaldlg is called to execute a callback, the first argument is a string (the name of the callback).

elseif ischar(varargin{1}) % Invoke named subfunction or callback
    try
        [varargout{1:nargout}] = feval(varargin{:}); % FEVAL switchyard
    catch
        disp(lasterr);
    end 
end

Wait for User Response

Defining the Yes and No Buttons Callbacks