MATLAB: Call Edit text from another Edit text in another Gui

gui

in PhatHienLSB.M i have a PushMo_Callback
function PushMo_Callback(hObject, eventdata, handles)
% hObject    handle to PushMo (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB

% handles    structure with handles and user data (see GUIDATA)

[filename, pathname] = uigetfile( ...
{ 
 '*.bmp','BMP (*.bmp)'; ...
'*.png','PNG(*.png)'; ...
     '*.jpg',  'JPG (*.jpg)'; ...
    '*.*',  'All Files (*.*)'}, ...
    'Moi ban chon tep anh');
set(handles.Edit1,'String',[filename,pathname]);
   TachTin.m
function TachThongDiep_OpeningFcn(hObject, eventdata, handles, varargin)
% This function has no output args, see OutputFcn.
% hObject    handle to figure
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
% varargin   command line arguments to TachThongDiep (see VARARGIN)
% Choose default command line output for TachThongDiep
handles.output = hObject;
filename=get(handles.PhatHienLSB.Edit1,'String');
set(handles.Edit2,'string',filename');
% Update handles structure
guidata(hObject, handles);
 help me
--> filename=get(handles.PhatHienLSB.Edit1,'String');
  -->set(handles.Edit2,'string',filename');

Best Answer

TachTongDiep doesn't know what the handle is for PhatHienLSB. So when you call handles.PhatHienLSB.Edit1 in TachTongDiep, it doesn't know you want to use the handles structure for PhatHienLSB. You need to pass the handles structure for PhatHienLSB to TachTongDiep. See getappdata and setappdata in the Matlab documentation, or use global variables, either way:
   function PushMo_Callback(hObject, eventdata, handles)
   [filename, pathname] = uigetfile( ...
   {'*.bmp','BMP (*.bmp)'; ...
    '*.png','PNG(*.png)'; ...
    '*.jpg',  'JPG (*.jpg)'; ...
    '*.*',  'All Files (*.*)'}, ...
    'Moi ban chon tep anh');
   set(handles.Edit1,'String',[filename,pathname]);
   setappdata(0,'handles_PhatHienLSB',handles)
   function TachThongDiep_OpeningFcn(hObject, eventdata, handles, varargin)
   handles.output = hObject;
   guidata(hObject, handles);
   handles_PhatHienLSB = getappdata(0,'handles_PhatHienLSB');
   filename = get(handles_PhatHienLSB.Edit1,'String');
   set(handles.Edit2,'String',filename);
At least I think that's the answer, I'm still kind of a novice though, some of the other guys here should be able to help out more.
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