Save variables in gui

2 次查看（过去 30 天）
Fiboehh
Fiboehh 2011-5-6
评论： Jan 2018-2-13
Dear, i'm strubling with the problem to save variables in a gui. I have an edit text with nothing in and when you type a number in it, i have to use this double in another widget or another function. I wrote http://matlab.wikia.com/wiki/FAQ?cb=4562#How_can_I_share_data_between_callback_functions_in_my_GUI.3F and tried the getappdata manner. So my callback function is like:
function ls_Callback(hObject, eventdata, handles)
% hObject handle to ls (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
ls = str2double(get(hObject,'String')) %to convert to double
ls = getappdata(handles.ls ,'ls') % so i can save it?
save(sino,'ls') % gives fualt...
and to use it in another function i tried
sinopara = load(sino);
ls = sinopara.ls;
But it doesnt work, please please a understandeble solution :) thx in advance

请先登录，再回答此问题。

采纳的回答

Walter Roberson
Walter Roberson 2011-5-6
function ls_Callback(hObject, eventdata, handles)
% hObject handle to ls (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
ls = str2double(get(hObject,'String')) %to convert to double
handles.ls = ls;
guidata(handles);
Then in any other callback or function that already had handles being passed to it, handles.ls would have the value. If you need the value someplace that does not have handles being passed to it, then
handles = guidata(YourFigureNumber);
and then use handles.ls
  2 个评论
Walter Roberson
Walter Roberson 2011-5-6
By the way: the first thing that has to be passed to save() is a file name, but in your sample code you are passing an undefined variable.
save('sino','ls')
would have gotten you further, but your getappdata() call is incorrect so you probably would have ended up saving an empty matrix.
Jan
Jan 2018-2-13
@Walter: Replace:
guidata(handles)
by
guidata(hObject, handles)

请先登录，再进行评论。

更多回答（1 个）

Fiboehh
Fiboehh 2011-5-7
I was too fast to accept the answer. I have a fault message when i try:
function ls_Callback(hObject, eventdata, handles)
% hObject handle to ls (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
ls = str2double(get(hObject,'String')) %to convert to double
handles.ls = ls;
guidata(handles);
this is the error message:
??? Error using ==> guidata at 89
H must be the handle to a figure or figure descendent.
Error in ==> DA>ls_Callback at 444
guidata(handles);
Error in ==> gui_mainfcn at 96
feval(varargin{:});
Error in ==> DA at 42
gui_mainfcn(gui_State, varargin{:});
Error in ==> @(hObject,eventdata)DA('ls_Callback',hObject,eventdata,guidata(hObject))
??? Error while evaluating uicontrol Callback

类别

在 Help Center 和 File Exchange 中查找有关 Environment and Settings 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by