GUI can't read variable with setappdata and getappdata
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I'm working on setappdata and getappdata. My program calls another function within function callback.
function pushbutton1_Callback(hObject, eventdata, handles)
hitung(handles)
d=str2num(get(handles.edit3,'String'));
c=getappdata(handles.pushbutton1,'c2');
set(handles.edit4,'String',c);
while c>d
a=a-1;
c=a/b;
set(handles.listbox1,'String',c);
end
function hitung(handles)
a=str2num(get(handles.edit1,'String'));
b=str2num(get(handles.edit2,'String'));
c=a/b;
set(handles.listbox1,'String',c);
setappdata(handles.listbox1,'c2',c);
I tried edit1 <6>, edit2 <3>, edit3 <1>. But variable c from <c=getappdata(handles.pushbutton1,'c2');> can't display in edit4, and because of that while loops can't run. So the result in listbox1 <2>. Is there any solution? Thankyou.
0 个评论
采纳的回答
Yao Li
2013-5-16
function pushbutton1_Callback(hObject, eventdata, handles)
% hObject handle to pushbutton1 (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
hitung(handles.listbox1,handles);
c=getappdata(handles.listbox1,'c2');
set(handles.listbox1,'String',c);
function hitung(handles_hitung,handles)
a=str2num(get(handles.edit1,'String'));
b=str2num(get(handles.edit2,'String'));
d=str2num(get(handles.edit3,'String'));
c=a/b;
while c>d
a=a-1;
c=a/b;
end
setappdata(handles_hitung,'c2',c);
% --- Executes on selection change in listbox1.
function listbox1_Callback(hObject, eventdata, handles)
% hObject handle to listbox1 (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
% Hints: contents = cellstr(get(hObject,'String')) returns listbox1 contents as cell array
% contents{get(hObject,'Value')} returns selected item from listbox1
% --- Executes during object creation, after setting all properties.
function listbox1_CreateFcn(hObject, eventdata, handles)
% hObject handle to listbox1 (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles empty - handles not created until after all CreateFcns called
% Hint: listbox controls usually have a white background on Windows.
% See ISPC and COMPUTER.
if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))
set(hObject,'BackgroundColor','white');
end
function edit1_Callback(hObject, eventdata, handles)
% hObject handle to edit1 (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
% Hints: get(hObject,'String') returns contents of edit1 as text
% str2double(get(hObject,'String')) returns contents of edit1 as a double
% --- Executes during object creation, after setting all properties.
function edit1_CreateFcn(hObject, eventdata, handles)
% hObject handle to edit1 (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles empty - handles not created until after all CreateFcns called
% Hint: edit controls usually have a white background on Windows.
% See ISPC and COMPUTER.
if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))
set(hObject,'BackgroundColor','white');
end
set(hObject,'String',6)
function edit2_Callback(hObject, eventdata, handles)
% hObject handle to edit2 (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
% Hints: get(hObject,'String') returns contents of edit2 as text
% str2double(get(hObject,'String')) returns contents of edit2 as a double
% --- Executes during object creation, after setting all properties.
function edit2_CreateFcn(hObject, eventdata, handles)
% hObject handle to edit2 (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles empty - handles not created until after all CreateFcns called
% Hint: edit controls usually have a white background on Windows.
% See ISPC and COMPUTER.
if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))
set(hObject,'BackgroundColor','white');
end
set(hObject,'String',3)
function edit3_Callback(hObject, eventdata, handles)
% hObject handle to edit3 (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
% Hints: get(hObject,'String') returns contents of edit3 as text
% str2double(get(hObject,'String')) returns contents of edit3 as a double
% --- Executes during object creation, after setting all properties.
function edit3_CreateFcn(hObject, eventdata, handles)
% hObject handle to edit3 (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles empty - handles not created until after all CreateFcns called
% Hint: edit controls usually have a white background on Windows.
% See ISPC and COMPUTER.
if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))
set(hObject,'BackgroundColor','white');
end
set(hObject,'String',1)
2 个评论
Yao Li
2013-5-17
I'm afraid not. Only 2 input arguments and the 2nd one must be handles. The 1st can be specified to any handles you want.
更多回答(1 个)
Yao Li
2013-5-16
- The handle for getappdata and setappdata must be the same
- If you write setappdata in the function hitung,you can get data by implementing getappdata only after the function hitung has been called
10 个评论
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