I Don't Know Why I am Getting This Error Matlab GUI

I Have The Following COde as Below But I Doesn't Works I don't Know Why

 function Extras_OpeningFcn(hObject, ~, handles, varargin)

      handles.output = hObject;

      handles.nOfClasses  = 0;

      handles.imagesInClass = 0;

      handles.row_col_dimension = 10;

      % Update handles structure

      handles.testImgPerClass = 0;

      handles.accuracy = 0;

      guidata(hObject, handles);

 function testDataBase_pushButton_Callback(~, ~, handles)

      handles.nOfClasses = str2double(get(handles.nOfClass_textBox , 'string'));

      pb_value = get(handles.traningImgSize_popUp,'Value');

      handles.imagesInClass = str2double(get(handles.imagesPerClass_textBox,'string')); 

      handles.testImgPerClass = str2double(get(handles.testImagePerPerson_textBox,'string')); 

      set(handles.percentAccuracy_textBox ,'string', int2str(handles.accuracy));

      guidata(hobject ,handles);

It Gives me this error//////

Error using feval
Undefined function 'imagesPerClass_textBox_CreateFcn' for input arguments of type
'matlab.ui.control.UIControl'.

Error in gui_mainfcn (line 95)
        feval(varargin{:});

Error in Extras (line 17)
    gui_mainfcn(gui_State, varargin{:});

Error in
@(hObject,eventdata)Extras('imagesPerClass_textBox_CreateFcn',hObject,eventdata,guidata(hObject))

Error using feval
Undefined function 'percentAccuracy_textBox_CreateFcn' for input arguments of type
'matlab.ui.control.UIControl'.

Error in gui_mainfcn (line 95)
        feval(varargin{:});

Error in Extras (line 17)
    gui_mainfcn(gui_State, varargin{:});

Error in
@(hObject,eventdata)Extras('percentAccuracy_textBox_CreateFcn',hObject,eventdata,guidata(hObject))

Error using feval
Undefined function 'testImagePerPerson_textBox_CreateFcn' for input arguments of type
'matlab.ui.control.UIControl'.

Error in gui_mainfcn (line 95)
        feval(varargin{:});

Error in Extras (line 17)
    gui_mainfcn(gui_State, varargin{:});

Error in
@(hObject,eventdata)Extras('testImagePerPerson_textBox_CreateFcn',hObject,eventdata,guidata(hObject))

Error using feval
Undefined function 'nOfClass_textBox_CreateFcn' for input arguments of type
'matlab.ui.control.UIControl'.

Error in gui_mainfcn (line 95)
        feval(varargin{:});

Error in Extras (line 17)
    gui_mainfcn(gui_State, varargin{:});

Error in @(hObject,eventdata)Extras('nOfClass_textBox_CreateFcn',hObject,eventdata,guidata(hObject))

Error using feval
Undefined function 'traningImgSize_popUp_CreateFcn' for input arguments of type
'matlab.ui.control.UIControl'.

Error in gui_mainfcn (line 95)
        feval(varargin{:});

Error in Extras (line 17)
    gui_mainfcn(gui_State, varargin{:});

Error in
@(hObject,eventdata)Extras('traningImgSize_popUp_CreateFcn',hObject,eventdata,guidata(hObject))

[pshtiwan karim]

Undefined function 'func_loadScan' for input arguments of type 'matlab.ui.control.UIControl'.

Error while evaluating UIControl Callback.

[Walter Roberson]

pshtiwan karim, the code the user posted has no reference to func_loadScan ?

Answer 1

[Geoff Hayes]

Muhammad - it appears that you are missing the functions to create the controls for the following

 testImagePerPerson_textBox
 traningImgSize_popUp
 nOfClass_textBox
 imagesPerClass_textBox
 percentAccuracy_textBox

If you don't need the CreateFcn for each of the above, then use GUIDE to open the Property Inspector for each of these controls and remove/clear the CreateFcn for each. Then save the changes and try running your GUI again.