如何在静态文本 GUI MATLAB 中输入新数据而不清除其中的先前数据

Question

我是 gui matlab 的新手。我创建了一个 gui。在其中，我使用名为 process 的按钮进行一些计算，结果以名为 texthistory 的静态文本显示。每次，我都会进行新的计算，新结果会显示在文本历史记录中，以前的数据会被删除。但我希望它们都出现在文本历史中。我该怎么做？

谢谢。这是我的代码：

function processpb_Callback(hObject, eventdata, handles)
% hObject    handle to processpb (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
if isempty(handles.D)
    warndlg('Please Insert Image','Warning');
elseif handles.flag(1)~=0 ;
else
    Val            =  get(handles.psf1,'String');
    Bw             =  im2bw(handles.D);
    s              =  regionprops(Bw, handles.D, 'Centroid');
    sx1            =  round(s.Centroid(1));
    sy1            =  round(s.Centroid(2));
    roi2           =  handles.roi/2;
    i              =  (sx1-((roi2)-1)):(sx1+ roi2);
    j              =  (sy1-((roi2)-1)):(sy1+ roi2);
    ROI            =  (handles.D(i,j));
    ROI            =  (2^16-1)-ROI;
    handles.avg1   =  (sum(ROI(:)/str2num(Val))./((handles.roi).^2));

end   
a1=['Reference ROI pixel value at 100 MU:  ',num2str(handles.avg)];
a2=['Image ROI pixel value at 100 MU:  ',num2str(handles.avg1)];
clock=[num2str(date), ' --- ',num2str(handles.c(4)),': ',num2str(handles.c(5))]; 
popval1=get(handles.popupmenu1,'Value');
strval1=get(handles.popupmenu1,'String');
type1=strval1{popval1};
popval2=get(handles.popupmenu2,'Value');
strval2=get(handles.popupmenu2,'String');
type2=strval2{popval2};
A={clock ,type1,type2, a1,a2}';
 set(handles.texthistory,'String',A)

guidata(hObject,handles);

Answer 1

你可以做这样的事情

previous_text = get(handles.texthistory,'String');
new_text = sprintf('%sn%s',previous_text,A);
set(handles.texthistory,'String', new_text);