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Access variable of my GUI from an output figure?

1 次查看（过去 30 天）
Elsie
Elsie 2014-6-25
关闭： MATLAB Answer Bot 2021-8-20
My GUI can output a figure which shows all the result. I use uicontrol to add a few buttons in the figure. But i don't know how to access my GUI variable from these buttons. Pls help. I have tried setappdata and getappdata. But still not working. Any one give a guide. Very grateful for your help.
function BtnBuffer_Callback(hObject, eventdata, handles)
handles.output =hObject;
BatchAnalysis(hObject, eventdata, handles);
guidata(hObject,handles);
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
function BatchAnalysis(hObject, eventdata, handles)
...
...
figureHandle = figure; %output a figure
h = handles.BtnCrop;
x = getappdata(h,'cropX');
y = getappdata(h,'cropY');
u1 = uicontrol('Style','push',...
'parent', figureHandle,...
'pos',[1470 500 80 80],...
'string','Back',...
'Enable','off',...
'Callback',@buttonBack);
...
...
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
function buttonBack(hObject, eventdata, handles)
handles.output = hObject;
set(u2, 'Enable','on');
if(ind > 1)
set(u1,'Enable','on');
ind = ind-1;
hold on
h = handles.BtnCrop;% the crop button in GUI, i want to capture my crop mark
x = getappdata(h,'cropX');
y = getappdata(h,'cropY');
batchPlot(final,blockImage,row,col,mag,pha,ind,x,y);
if(ind == 1)
set(u1,'Enable','off');
end
else
set(u1,'Enable','off');
end
guidata(hObject,handles);
e.g. in function buttonBack, i want to access handles.BtnCrop in my GUI, error says no such reference. What can i do? I have been suffering this problem for quite a few days and still can't figure out.

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