tempstruct.randstate = randstate;
                tempstruct.randnstate = randnstate;
            end
            options = gaguiReadHashTable(model);
  
            if get(cb{CB_RESTART}, 'Value') == 1 
                options.InitialPopulation=pop;
                options.InitialScores=scores;    
            end 
            %remove special gui outputfcn which is the first in the list
            if ~isempty(options.OutputFcns) 
                temp = options.OutputFcns{1};
                temp = temp{1};
                if strcmp(func2str(temp), 'gatooloutput')
                    options.OutputFcns(1) = [];
                end
            end
            if isempty(options.OutputFcns)
                options.OutputFcns = [];
            end
            tempstruct.options=options;
            assignin('base', get(e{CB_PROBLEM}, 'String'), tempstruct);
        end
        if get(cb{CB_OPTION}, 'Value') == 1  
            options = gaguiReadHashTable(model);
                
            %remove special gui outputfcn which is the first in the list
            if ~isempty(options.OutputFcns) 
                temp = options.OutputFcns{1};
                temp = temp{1};
                if strcmp(func2str(temp), 'gatooloutput')
                    options.OutputFcns(1) = [];
                end
            end
            if isempty(options.OutputFcns)
                options.OutputFcns = [];
            end
            
            assignin('base', get(e{CB_OPTION}, 'String'), options);
        end
        if get(cb{CB_RESULTS}, 'Value') == 1  % export solution 
            tempstruct = struct;
            tempstruct.x = x;
            tempstruct.fval = fval;
            tempstruct.exitmessage = exitMessage;
            tempstruct.output = output;
            assignin('base', get(e{CB_RESULTS}, 'String'), tempstruct); 
        end
        if length(varnames) == 1
            msg = sprintf('The variable ''%s'' has been created in the current workspace.', varnames{1});
        elseif length(varnames) == 2 
            msg = sprintf('The variables ''%s'' and ''%s'' have been created in the current workspace.', varnames{1}, varnames{2});
        elseif length(varnames) == 3
            msg = sprintf('The variables ''%s'', ''%s'' and ''%s'' have been created in the current workspace.', varnames{1}, varnames{2}, varnames{3});
        else  %shouldn't get here
            msg='';
        end
        disp(msg);
        delete(dialog);
    else
        errordlg('Names must be unique', 'Invalid Names');
    end
 
%----------------------------------------------------------------------------
function CancelCallback(obj, eventdata, dialog)
    delete(dialog);
   
%----------------------------------------------------------------------------
function KeyPressCallback(obj, eventdata, dialog, cb, e, model, x, fval, ...
        exitMessage, output, fitnessFcn,nvars,pop, scores, randstate, ...
        randnstate, randchoice)
    asciiVal = get(dialog, 'CurrentCharacter');
    if ~isempty(asciiVal)
        % space bar or return is the "same" as OK
        if (asciiVal==32 || asciiVal==13)   
            OKCallback(obj, eventdata, dialog, cb, e, model, x, fval, ...
               exitMessage, output, fitnessFcn, nvars, pop, scores, randstate, ...
               randnstate, randchoice);
        elseif (asciiVal == 27) % escape is the "same" as Cancel
            delete(dialog);
        end
    end
   
%----------------------------------------------------------------------------
function [cb, e] = layoutDialog(hDlg, okBut, cancelBut, checkboxLabels, ...
                                variableNames,fitnessFcn,nvars, disableFields)
    
    EXTENT_WIDTH_INDEX = 3;  % width is the third argument of extent
    
    POS_X_INDEX      = 1;
    POS_Y_INDEX      = 2;
    POS_WIDTH_INDEX  = 3;
    POS_HEIGHT_INDEX = 4;
    
    CONTROL_SPACING  = 5;
    EDIT_WIDTH       = 90;
    CHECK_BOX_WIDTH  = 20;
    DEFAULT_INDENT   = 20;
    
    CB_PROBLEM = 1;
    CB_RESTART = 2;
    CB_OPTION = 3;
    CB_RESULTS = 4;
    
    okPos = get(okBut, 'Position');
    cancelPos = get(cancelBut, 'Position');
    longestCBExtent = 0;
    ypos = okPos(POS_HEIGHT_INDEX) + okPos(POS_Y_INDEX)+ 2*CONTROL_SPACING;
    cb = cell(4, 1);
    e = cell(4, 1);
    for i = 4:-1:1
        cb{i} = uicontrol(hDlg, 'Style', 'checkbox', 'String', ...
                          checkboxLabels{i});
        check_pos = get(cb{i}, 'Position');
        check_pos(POS_Y_INDEX) = ypos;
        extent = get(cb{i}, 'Extent');
        width = extent(EXTENT_WIDTH_INDEX);
        check_pos(POS_WIDTH_INDEX) = width + CHECK_BOX_WIDTH;  
        set(cb{i}, 'Position', check_pos);
        if i==CB_RESTART %indent 2nd line a little and don't add a edit field;
            check_pos(POS_X_INDEX) = check_pos(POS_X_INDEX) + CHECK_BOX_WIDTH;
            set(cb{i}, 'Position', check_pos);
        else
            e{i} = uicontrol(hDlg, 'Style', 'edit', 'String', variableNames{i}, ...
                                   'BackgroundColor', 'white', ...
                                   'HorizontalAlignment', 'left');
            edit_pos = get(e{i}, 'Position');
            edit_pos(POS_Y_INDEX) = ypos;
            edit_pos(POS_WIDTH_INDEX) = EDIT_WIDTH;
            % cursor doesn't seem to appear in default edit height
            edit_pos(POS_HEIGHT_INDEX) = edit_pos(POS_HEIGHT_INDEX) + 1;
            set(e{i}, 'Position', edit_pos);
        end
        ypos = ypos + CONTROL_SPACING + edit_pos(POS_HEIGHT_INDEX);
        if width > longestCBExtent
            longestCBExtent = width;
        end
        
        if isempty(fitnessFcn) || isempty(nvars) 
            set(cb{CB_PROBLEM}, 'Enable', 'off');
            set(e{CB_PROBLEM}, 'Enable', 'off');
            set(e{CB_PROBLEM}, 'Backgroundcolor', [0.831373 0.815686 0.784314]);
        end

        if disableFields
            set(cb{CB_RESTART}, 'Enable', 'off');
            set(cb{CB_RESULTS}, 'Enable', 'off');
            set(e{CB_RESTART}, 'Enable', 'off');
            set(e{CB_RESTART}, 'Backgroundcolor', [0.831373 0.815686 0.784314]);
            set(e{CB_RESULTS}, 'Enable', 'off');
            set(e{CB_RESULTS}, 'Backgroundcolor', [0.831373 0.815686 0.784314]);
            if strcmp(get(cb{CB_PROBLEM}, 'Enable'), 'off')  % only options is enabled - check it
                set(cb{CB_OPTION}, 'Value', 1);
            end
        end
    end

    % Position edit boxes
    edit_x_pos = check_pos(POS_X_INDEX) + longestCBExtent + CONTROL_SPACING ...
                           + CHECK_BOX_WIDTH;
    for i = 1:4
        edit_pos = get(e{i}, 'Position');
        edit_pos(POS_X_INDEX) = edit_x_pos;
        set(e{i}, 'Position', edit_pos);
    end
    h_pos = get(hDlg, 'Position');
    
    h_pos(POS_WIDTH_INDEX) = max(edit_x_pos + edit_pos(POS_WIDTH_INDEX) + ...
                                 CHECK_BOX_WIDTH, okPos(POS_WIDTH_INDEX) + ...
                                 cancelPos(POS_WIDTH_INDEX) + ...
                                 CONTROL_SPACING + (2 * DEFAULT_INDENT));
    h_pos(POS_HEIGHT_INDEX) = ypos;
    set(hDlg, 'Position', h_pos);
    
    % Make sure it is on-screen
    oldu = get(0,'Units');
    set(0,'Units','pixels');
    screenSize = get(0,'ScreenSize');
    set(0,'Units',oldu);
    outerPos = get(hDlg,'OuterPosition');
    if outerPos(1)+outerPos(3) > screenSize(3)
        outerPos(1) = screenSize(3) - outerPos(3);
    end
    if outerPos(2)+outerPos(4) > screenSize(4)
        outerPos(2) = screenSize(4) - outerPos(4);
    end
    set(hDlg, 'OuterPosition', outerPos);
    
    x_ok = (h_pos(POS_WIDTH_INDEX))/2 -  (okPos(POS_WIDTH_INDEX) + ... 
            CONTROL_SPACING + cancelPos(POS_WIDTH_INDEX))/2;
    okPos(POS_X_INDEX) = x_ok;
    set(okBut, 'Position', okPos);
    cancelPos(POS_X_INDEX) = okPos(POS_X_INDEX) + okPos(POS_WIDTH_INDEX) + ...
                                   CONTROL_SPACING;
    set(cancelBut, 'Position', cancelPos);

    % Reorder the children so that tabbing makes sense
    children = get(hDlg, 'children');
    children = flipud(children);
    set(hDlg, 'children', children);