function Unterfenster
scrsz = get(0,'ScreenSize');
%% 
Unterfenster = figure('Position',[0.01*scrsz(4),0.065*scrsz(4),0.99*scrsz(3),0.895*scrsz(4)],...
                    'Units','normalized',...
                    'Resize','off',...
                    'MenuBar','none',...
                    'Name','Test Datenübergabe Unterfenster',...
                    'NumberTitle','off',...
                    'Tag','figure2');

%%
handles.PopupmenuString = getappdata(0,'PopupmenuString');
handles.popupmenu2 = uicontrol('Parent',Unterfenster,...
                                             'Style','popupmenu',...
                                             'String',handles.PopupmenuString,...
                                             'Value',1,...
                                             'Units','normalized',...
                                             'Position',[.19,.96,.2,.025],...
                                             'BackgroundColor',[1 1 1],...
                                             'Tag', 'popupmenu2');                                       
setappdata(0,'PopupmenuString',handles.PopupmenuString);