title: Reference to non-existent field error when showing database data to editbox in gui matlab
body: <pre><code>% Begin initialization code - DO NOT EDIT
  
          gui_Singleton = 1;
          gui_State = struct('gui_Name',       mfilename, ...
                             'gui_Singleton',  gui_Singleton, ...
                             'gui_OpeningFcn', @skripsi_OpeningFcn, ...
                             'gui_OutputFcn',  @skripsi_OutputFcn, ...
                             'gui_LayoutFcn',  [] , ...
                             'gui_Callback',   []);
          if nargin &amp;&amp; ischar(varargin{1})
              gui_State.gui_Callback = str2func(varargin{1});
          end
  
      if nargout
          [varargout{1:nargout}] = gui_mainfcn(gui_State, varargin{:});
      else
          gui_mainfcn(gui_State, varargin{:});
      end
  
  % End initialization code - DO NOT EDIT
  
  
  % --- Executes just before skripsi is made visible.
  function skripsi_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 skripsi (see VARARGIN)
  
  % Choose default command line output for skripsi
  
      handles.output = hObject;
  
  % Update handles structure
  
      guidata(hObject, handles);
  
  % UIWAIT makes skripsi wait for user response (see UIRESUME)
  % uiwait(handles.figure1);
  
      conmysql = database('skripsi_mysql','root','')
      fetch(conmysql,'select * from data')
  
  % --- Outputs from this function are returned to the command line.
  function varargout = skripsi_OutputFcn(hObject, eventdata, handles) 
  % varargout  cell array for returning output args (see VARARGOUT);
  % hObject    handle to figure
  % eventdata  reserved - to be defined in a future version of MATLAB
  % handles    structure with handles and user data (see GUIDATA)
  
  % Get default command line output from handles structure
  
      varargout{1} = handles.output;
  
  
  
  function code_Callback(hObject, eventdata, handles)
  % hObject    handle to code (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 code as text
  %        str2double(get(hObject,'String')) returns contents of code as a double
  
      code = get(hObject,'String')
      handles.code = code
      guidata(hObject,handles)
  
  % --- Executes during object creation, after setting all properties.
  function code_CreateFcn(hObject, eventdata, handles)
  % hObject    handle to code (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 &amp;&amp; isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))
          set(hObject,'BackgroundColor','white');
      end
  
  
  
  function in_Callback(hObject, eventdata, handles)
  % hObject    handle to in (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 in as text
  %        str2double(get(hObject,'String')) returns contents of in as a double
  
      in = get(hObject,'String')
      handles.in = in
      guidata(hObject,handles)
  
  % --- Executes during object creation, after setting all properties.
  function in_CreateFcn(hObject, eventdata, handles)
  % hObject    handle to in (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 &amp;&amp; isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))
          set(hObject,'BackgroundColor','white');
      end
  
  
  function out_Callback(hObject, eventdata, handles)
  % hObject    handle to out (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 out as text
  %        str2double(get(hObject,'String')) returns contents of out as a double
  
      out = get(hObject,'String')
      handles.out = out
      guidata(hObject,handles)
  
  % --- Executes during object creation, after setting all properties.
  function out_CreateFcn(hObject, eventdata, handles)
  % hObject    handle to out (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 &amp;&amp; isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))
          set(hObject,'BackgroundColor','white');
      end
  
  
  
  function fee_Callback(hObject, eventdata, handles)
  % hObject    handle to fee (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 fee as text
  %        str2double(get(hObject,'String')) returns contents of fee as a double
  
      fee = str2double(get(hObject,'String'))
      handles.fee = fee
      guidata(hObject,handles)
  
  % --- Executes during object creation, after setting all properties.
  function fee_CreateFcn(hObject, eventdata, handles)
  % hObject    handle to fee (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 &amp;&amp; isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))
          set(hObject,'BackgroundColor','white');
      end
  
  
  % --- Executes on button press in masuk.
  function masuk_Callback(hObject, eventdata, handles)
  % hObject    handle to masuk (see GCBO)
  % eventdata  reserved - to be defined in a future version of MATLAB
  % handles    structure with handles and user data (see GUIDATA)
  
      a = 'QWERTY';
      t = datestr(datenum(now),'HH:MM');
      conmysql = database('skripsi_mysql','root','')
      field = {'Code','In','Out','Fee'}
      databaru = {a,t,'',}
      insert(conmysql,'data',field,databaru)
      data = fetch(conmysql,'select * from data') 
  
  
  % --- Executes on button press in camera.
  function camera_Callback(hObject, eventdata, handles)
  % hObject    handle to camera (see GCBO)
  % eventdata  reserved - to be defined in a future version of MATLAB
  % handles    structure with handles and user data (see GUIDATA)
  
  % --- Executes on button press in keluar.
  function keluar_Callback(hObject, eventdata, handles)
  % hObject    handle to keluar (see GCBO)
  % eventdata  reserved - to be defined in a future version of MATLAB
  % handles    structure with handles and user data (see GUIDATA)
  
      conmysql = database('skripsi_mysql','root','')
      sql = ['select * from data where PlatNomor =','''',handles.code,''''];
      fetch(conmysql,'select *from data');
      data = fetch(conmysql,sql)
      data.In
      t1 = datestr(datenum(now),'HH:MM');
      t2 = datenum(t1);
      t3 = datenum(data.in);
      time_diff = t3 - t2;
      hours = ceil(time_diff * 24)
      fee = hours * 5;
      field = {'JamKeluar','Biaya'};
      databaru = {t1,2000};
      tablename = 'data';
      whereclause = ['where PlatNomor =','''',handles.code,''''];
      update(conmysql,tablename,field,databaru,whereclause);
      set(handles.in,'String',data.in)
      set(handles.out,'String',data.out)
      set(handles.fee,'String',data.fee)
  </code></pre>