Switching a radio button back to last value

Hi,

I'd like my radiobutton to switch back to the last used value if the user of the gui answers 'no' to the dialogbox.

Here is the button/function (I have three buttons/cases in the actual code)

 %buttons
 FileTypeBG = uibuttongroup(ParametersFig, 'Visible','on',...
                   'Title','Fit Type',...
                   'Parent',ParametersFig,'units','normalized','outerposition',[.22 .33 .10 .12],...
                   'BackgroundColor',.8*[1 1 1],...
                   'SelectionChangedFcn',@FileType);
Filenames_B = uicontrol(FileTypeBG,'Style',...
                  'radiobutton',...
                  'String','Filenames',...
                  'Position',[10 3 100 30],...
                  'BackgroundColor',.8*[1 1 1],...
                  'HandleVisibility','on');
  end

    function FileType(src, event)

        switch src.String
            case 'Filenames'
                FileMethod.Tag = Filenames
                choice = questdlg('Are you sure?',...
                    'Switching to Process Data via Filenames Confirmation',...
                    'Yes','No','No');
                switch choice
                    case 'Yes'
                        Update1
                    otherwise
                        ???????????????
                end
        end
end

Answer 1

[Walter Roberson]

oldv = event.OldValue;
if ~isempty(oldv)
  oldv.Value = 1;   %activate previous button
else
  event.NewValue.Value = 0;   %no previous button, just deactivate current one
end

[Sam Gottheim]

I like this answer and it is probably more general and safe, but since my buttongroup always starts with one of the values selected, just using this seems to work

    oldv = event.OldValue;
    oldv.Value = 1;

Answer 2

[Rik]

Just save the previous state to the guidata struct. You can easily load it like this:

hObject=get(scr,'Parent');
handles=guidata(hObject);