My closereq function is empty. How can i replace it?

I am unable to close figures with the "close" command, and just discovered that my closereq m-file only contains:

function closereq(handle,event)

end

I'd like to replace my empty function, but I can't find it anywhere.

Answer 1

[Adam]

function closereq
%CLOSEREQ  Figure close request function.
%   CLOSEREQ deletes the current figure window.  By default, CLOSEREQ is
%   the CloseRequestFcn for new figures.

%   Copyright 1984-2012 The MathWorks, Inc.

%   Note that closereq now honors the user's ShowHiddenHandles setting
%   during figure deletion.  This means that deletion listeners and
%   DeleteFcns will now operate in an environment which is not guaranteed
%   to show hidden handles.
if isempty(gcbf)
    if length(dbstack) == 1
        warning(message('MATLAB:closereq:ObsoleteUsage'));
    end
    close('force');
else
    delete(gcbf);
end

[Håvard V]

thanks!