Problem on GUIDE Initialization Value

Question

Baris Ciftci 2018-3-23

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/390227-problem-on-guide-initialization-value

评论： Baris Ciftci 2018-3-27

Hello,

When I run a GUI, I cannot set the initial value of a variable -handles.data- as 0. Here I copy related parts of my GUI .m file. The first part is the opening function and I try to initialize handles.data as '0000'. The second part is related to a push button, named On. When I run the GUI and press directly the On button afterwards, I expect the handles.data to be '0000', but it turns out to be the last saved value of itself in the previous run of the GUI.

Do you have any ideas to solve? Thanks in advance.

Baris

    function test_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   unrecognized PropertyName/PropertyValue pairs from the
    %            command line (see VARARGIN)
    % Choose default command line output for Test
    handles.output = hObject;
    set(handles.Off, 'Enable', 'off');
    set(handles.pushbutton3, 'Enable', 'off');
    set(handles.slider1,'Value', 0);
    set(handles.uibuttongroup1,'selectedobject',handles.radiobutton1)
    set(handles.text4,'String', '0.00')
    handles.data='0000';
    t=tcpip('192.168.1.10',7);
    fopen(t);
    handles.ipdata = t;
    % create the listener for the slider
    handles.sliderListener = addlistener(handles.slider1,'ContinuousValueChange', ...
                                          @(hFigure,eventdata) slider1ContValCallback(...
                                            hObject,eventdata));
    % Update handles structure
    guidata(hObject, handles);
function On_Callback(hObject, eventdata, handles)
% hObject    handle to On (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
t = handles.ipdata;
handles.data=num2str(getappdata(0,'dutymax')*getappdata(0,'slider_Value'),'%04.f');
disp(handles.data);
guidata(hObject,handles)
fprintf(t, handles.data);
set(handles.Off, 'Enable', 'on');
set(handles.On, 'Enable', 'off');
set(handles.pushbutton3, 'Enable', 'on');
set(handles.radiobutton1, 'Enable', 'off');
set(handles.radiobutton2, 'Enable', 'off');

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Answer 1

Murali Krishna 2018-3-24

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/390227-problem-on-guide-initialization-value#answer_311655

Hello.. Try using clear all at the start of the code.

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Baris Ciftci 2018-3-27

Hi, Thanks for the answer. However, if I use clear all before the initialization function (starting with varargout...), it gives error. If I use at the end of initialization function, it runs but it does not help.

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