Error using handle/handle set

Question

Alexandra Mego Almeyda 2021-12-27

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1618225-error-using-handle-handle-set

回答： Voss 2021-12-27

Good afternoon I would like to know what the error is since it does not let me use the handles

this is my code

function varargout = calc3(varargin)

% CALC3 MATLAB code for calc3.fig

% CALC3, by itself, creates a new CALC3 or raises the existing

% singleton*.

%

% H = CALC3 returns the handle to a new CALC3 or the handle to

% the existing singleton*.

%

% CALC3('CALLBACK',hObject,eventData,handles,...) calls the local

% function named CALLBACK in CALC3.M with the given input arguments.

%

% CALC3('Property','Value',...) creates a new CALC3 or raises the

% existing singleton*. Starting from the left, property value pairs are

% applied to the GUI before calc3_OpeningFcn gets called. An

% unrecognized property name or invalid value makes property application

% stop. All inputs are passed to calc3_OpeningFcn via varargin.

%

% *See GUI Options on GUIDE's Tools menu. Choose "GUI allows only one

% instance to run (singleton)".

%

% See also: GUIDE, GUIDATA, GUIHANDLES

% Edit the above text to modify the response to help calc3

% Last Modified by GUIDE v2.5 26-Dec-2021 11:09:04

% Begin initialization code - DO NOT EDIT

gui_Singleton = 1;

gui_State = struct('gui_Name', mfilename, ...

'gui_Singleton', gui_Singleton, ...

'gui_OpeningFcn', @calc3_OpeningFcn, ...

'gui_OutputFcn', @calc3_OutputFcn, ...

'gui_LayoutFcn', [] , ...

'gui_Callback', []);

if nargin && 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 calc3 is made visible.

function calc3_OpeningFcn(hObject, eventdata, handles, varargin)

axes('Units','normalized','Position',[0 0 1 1]);

x=imread('cilindro.jpg');

image(x),axis off

% 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 calc3 (see VARARGIN)

% Choose default command line output for calc3

handles.output = hObject;

% Update handles structure

guidata(hObject, handles);

% UIWAIT makes calc3 wait for user response (see UIRESUME)

% uiwait(handles.figure1);

% --- Outputs from this function are returned to the command line.

function varargout = calc3_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 edit1_Callback(hObject, eventdata, handles)

Val=get(hObject,'String'); % Almacenar valor ingresado

NewVal=str2double(Val); % Transformar a formato double

handles.edit1=NewVal; % Almacenar enidentificador

guidata(hObject,handles); % Salvar datos de la aplicación

% 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

function edit2_Callback(hObject, eventdata, handles)

Val=get(hObject,'String'); % Almacenar valor ingresado

NewVal=str2double(Val); % Transformar a formato double

handles.edit2=NewVal; % Almacenar enidentificador

guidata(hObject,handles); % Salvar datos de la aplicación

% 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

function edit3_Callback(hObject, eventdata, handles)

Val=get(hObject,'String'); % Almacenar valor ingresado

NewVal=str2double(Val); % Transformar a formato double

handles.edit3=NewVal; % Almacenar enidentificador

guidata(hObject,handles); % Salvar datos de la aplicación

% 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

function edit4_Callback(hObject, eventdata, handles)

Val=get(hObject,'String'); % Almacenar valor ingresado

NewVal=str2double(Val); % Transformar a formato double

handles.edit4=NewVal; % Almacenar enidentificador

guidata(hObject,handles); % Salvar datos de la aplicación

% hObject handle to edit4 (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 edit4 as text

% str2double(get(hObject,'String')) returns contents of edit4 as a double

% --- Executes during object creation, after setting all properties.

function edit4_CreateFcn(hObject, eventdata, handles)

% hObject handle to edit4 (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

% --- Executes on button press in pushbutton1.

function pushbutton1_Callback(hObject, eventdata, handles)

calc1

clear,clc,close(calc3)

% 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)

% --- Executes on button press in pushbutton2.

function pushbutton2_Callback(hObject, eventdata, handles)

ini=char(' ');

set(handles.edit2,'String',ini);

set(handles.edit3,'String',ini);

set(handles.edit4,'String',ini);

set(handles.edit5,'String',ini);

set(handles.edit6,'String',ini);

% hObject handle to pushbutton2 (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 pushbutton3.

function pushbutton3_Callback(hObject, eventdata, handles)

A=handles.edit1;

B=handles.edit2;

C=handles.edit3;

D=handles.edit5;

E=handles.edit4;

F=handles.edit6;

gapmax=A-D-((E+B)/2)+F;

set(handles.text8,'String',gapmax);

gapmin=D-((C-B)/2);

set(handles.text10,'String',gapmin);

% hObject handle to pushbutton3 (see GCBO)

% eventdata reserved - to be defined in a future version of MATLAB

% handles structure with handles and user data (see GUIDATA)

function edit5_Callback(hObject, eventdata, handles)

Val=get(hObject,'String'); % Almacenar valor ingresado

NewVal=str2double(Val); % Transformar a formato double

handles.edit5=NewVal; % Almacenar enidentificador

guidata(hObject,handles); % Salvar datos de la aplicación

% hObject handle to edit5 (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 edit5 as text

% str2double(get(hObject,'String')) returns contents of edit5 as a double

% --- Executes during object creation, after setting all properties.

function edit5_CreateFcn(hObject, eventdata, handles)

% hObject handle to edit5 (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

function edit6_Callback(hObject, eventdata, handles)

Val=get(hObject,'String'); % Almacenar valor ingresado

NewVal=str2double(Val); % Transformar a formato double

handles.edit6=NewVal; % Almacenar enidentificador

guidata(hObject,handles); % Salvar datos de la aplicación

% hObject handle to edit6 (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 edit6 as text

% str2double(get(hObject,'String')) returns contents of edit6 as a double

% --- Executes during object creation, after setting all properties.

function edit6_CreateFcn(hObject, eventdata, handles)

% hObject handle to edit6 (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

% --- Executes on button press in checkbox1.

function checkbox1_Callback(hObject, eventdata, handles)

% hObject handle to checkbox1 (see GCBO)

% eventdata reserved - to be defined in a future version of MATLAB

% handles structure with handles and user data (see GUIDATA)

% Hint: get(hObject,'Value') returns toggle state of checkbox1

% --- Executes on button press in checkbox2.

function checkbox2_Callback(hObject, eventdata, handles)

% hObject handle to checkbox2 (see GCBO)

% eventdata reserved - to be defined in a future version of MATLAB

% handles structure with handles and user data (see GUIDATA)

% Hint: get(hObject,'Value') returns toggle state of checkbox2

and this comes out as an error

Error using handle.handle/set

Invalid or deleted object.

Error in calc3>pushbutton3_Callback (line 203)

set(A,'String','');

Error in gui_mainfcn (line 95)

feval(varargin{:});

Error in calc3 (line 42)

gui_mainfcn(gui_State, varargin{:});

Error in matlab.graphics.internal.figfile.FigFile/read>@(hObject,eventdata)calc3('pushbutton3_Callback',hObject,eventdata,guidata(hObject))

Error while evaluating UIControl Callback.

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Answer 1

Voss 2021-12-27

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1618225-error-using-handle-handle-set#answer_862820

在 MATLAB Online 中打开

The error happens because you are overwriting the edit uicontrols' handles in their callbacks. For instance:

function edit5_Callback(hObject, eventdata, handles)
% get handles.edit5 'String' property and store it in Val:
Val=get(hObject,'String'); % Almacenar valor ingresado
% convert to numeric and store in NewVal:
NewVal=str2double(Val); % Transformar a formato double
% replace handles.edit5 with NewVal:
handles.edit5=NewVal; % Almacenar enidentificador
% update the handles structure in the GUI:
guidata(hObject,handles); % Salvar datos de la aplicación

Now the next time you refer to "handles.edit5" it refers to the numeric scalar created here, rather than the handle to the uicontrol that used to be handles.edit5.

The solution is to avoid overwriting the handles to your uicontrol objects. If you want to store information about them in the handles structure, use different field names. For instance:

function edit5_Callback(hObject, eventdata, handles)
% get handles.edit5 'String' property and store it in Val:
Val=get(hObject,'String'); % Almacenar valor ingresado
% convert to numeric and store in NewVal:
NewVal=str2double(Val); % Transformar a formato double
% store NewVal in the handles structure as edit5_value:
handles.edit5_value=NewVal; % Almacenar enidentificador
% update the handles structure in the GUI:
guidata(hObject,handles); % Salvar datos de la aplicación

then use "handles.edit5" when you want to refer to the uicontrol, and use "handles.edit5_value" when you want to refer to the numeric value of the String of handles.edit5.

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Error using handle/handle set

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