You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: DQ_preavg.m
    path of file: ./repos/erplab/GUIs
    
    the code of the file until where you have to start completion: function varargout = DQ_preavg(varargin)
% DQ_PREAVG MATLAB code for DQ_preavg.fig
%      DQ_PREAVG, by itself, creates a new DQ_PREAVG or raises the existing
%      singleton*.
%
%      H = DQ_PREAVG returns the handle to a new DQ_PREAVG or the handle to
%      the existing singleton*.
%
%      DQ_PREAVG('CALLBACK',hObject,eventData,handles,...) calls the local
%      function named CALLBACK in DQ_PREAVG.M with the given input arguments.
%
%      DQ_PREAVG('Property','Value',...) creates a new DQ_PREAVG or raises the
%      existing singleton*.  Starting from the left, property value pairs are
%      appli
    
function are returned to the command line.
function varargout = DQ_preavg_OutputFcn(hObject, eventdata, handles) 
% varargout  cell array for returning output args (see VARARGOUT);
% hObject    handle to figure
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Get default command line output from handles structure
varargout{1} = handles.output;
% The figure can be deleted now
delete(handles.gui_chassis);
pause(0.1)


% --- Executes on button press in radiobutton4.
function radiobutton4_Callback(hObject, eventdata, handles)
% hObject    handle to radiobutton4 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hint: get(hObject,'Value') returns toggle state of radiobutton4



%-------------------------------------------------------------------------
function checkbox_includeALL_Callback(hObject, eventdata, handles)
if get(hObject,'Value')
    set(handles.checkbox_excludeartifacts,'Value',0)
    set(handles.checkbox_onlyartif,'Value',0)
%     set(handles.checkbox_include_indices,'Value',0)
%     set(handles.edit_include_indices,'Enable', 'off')
%     set(handles.pushbutton_epochAssistant,'Enable', 'off')
%     set(handles.pushbutton_loadlist,'Enable', 'off')
%     %set(handles.pushbutton_fileorvalues,'Enable', 'off')
%     set(handles.pushbutton_saveList,'Enable', 'off')
%     set(handles.pushbutton_viewfile,'Enable', 'off')
%     set(handles.radiobutton_usefilename, 'Enable', 'off')
%     set(handles.radiobutton_useindices, 'Enable', 'off')
%     set(handles.pushbutton_clearall, 'Enable', 'off')
else
    set(handles.checkbox_includeALL,'Value',1)
end