Disabling a Button after pressed - GUI

Question

0 个投票

Im getting this error message for a GUI

Struct contents reference from a non-struct array object.

I have the student use version.

Error in JOSHSPOKER>pushbutton1_Callback (line 84)
set(handles.pushbutton1,'enable','off')
Error in gui_mainfcn (line 95)
        feval(varargin{:});
Error in JOSHSPOKER (line 42)
    gui_mainfcn(gui_State, varargin{:});
Error in
matlab.graphics.internal.figfile.FigFile/read>@(hObject,eventdata)JOSHSPOKER('pushbutton1_Callback',hObject,eventdata,guidata(hObject)) 
Error while evaluating UIControl Callback

This is my code:

% --- Executes on button press in pushbutton1.
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)
%DISABLE!!!
set(handles.pushbutton1,'enable','off')
set(handles.pushbutton1,'visible','off')
[MyCard1, MyCard2, TheirCard1, TheirCard2] = shuffle

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Answer 1

Walter Roberson 2016-3-18

在 MATLAB Online 中打开

0 个投票

Somehow, your handles structure is not a handles structure. Either:

it was never set up properly (e.g., you did not use GUIDE and you did not create it yourself); or
you have used it before it is set up properly (but it should already have been done by the time any callback can be invoked); or
it has been corrupted, such as you somewhere call

guidata(hObject,handles)

after handles had been set to a non-structure.

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Joshua Wojciechowski 2016-3-20

编辑：Walter Roberson 2016-3-20

在 MATLAB Online 中打开

function varargout = JOSHSPOKER(varargin)
% JOSHSPOKER MATLAB code for JOSHSPOKER.fig
%      JOSHSPOKER, by itself, creates a new JOSHSPOKER or raises the existing
%      singleton*.
%
%      H = JOSHSPOKER returns the handle to a new JOSHSPOKER or the handle to
%      the existing singleton*.
%
%      JOSHSPOKER('CALLBACK',hObject,eventData,handles,...) calls the local
%      function named CALLBACK in JOSHSPOKER.M with the given input arguments.
%
%      JOSHSPOKER('Property','Value',...) creates a new JOSHSPOKER or raises the
%      existing singleton*.  Starting from the left, property value pairs are
%      applied to the GUI before JOSHSPOKER_OpeningFcn gets called.  An
%      unrecognized property name or invalid value makes property application
%      stop.  All inputs are passed to JOSHSPOKER_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 JOSHSPOKER
% Last Modified by GUIDE v2.5 19-Mar-2016 21:51:17
% Begin initialization code - DO NOT EDIT
gui_Singleton = 1;
gui_State = struct('gui_Name',       mfilename, ...
                   'gui_Singleton',  gui_Singleton, ...
                   'gui_OpeningFcn', @JOSHSPOKER_OpeningFcn, ...
                   'gui_OutputFcn',  @JOSHSPOKER_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 JOSHSPOKER is made visible.
function JOSHSPOKER_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 JOSHSPOKER (see VARARGIN)
clc
% Choose default command line output for JOSHSPOKER
handles.output = hObject;
% Update handles structure
guidata(hObject, handles);
% UIWAIT makes JOSHSPOKER wait for user response (see UIRESUME)
% uiwait(handles.figure1);
% --- Outputs from this function are returned to the command line.
function varargout = JOSHSPOKER_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;
% --- Executes on button press in pushbutton1.
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)
%DISABLE!!!
[MyCard1, MyCard2, TheirCard1, TheirCard2] = shuffle
set(handles.pushbutton1, 'Enable', 'off')
set(handles.pushbutton1, 'Visible', 'off')
% --- Executes during object creation, after setting all properties.
function axes1_CreateFcn(hObject, eventdata, handles)
% hObject    handle to axes1 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    empty - handles not created until after all CreateFcns called
[y] = cardimage(handles.c1);
% Hint: place code in OpeningFcn to populate axes1
% --- Executes during object creation, after setting all properties.
function axes2_CreateFcn(hObject, eventdata, handles)
% hObject    handle to axes2 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    empty - handles not created until after all CreateFcns called
% Hint: place code in OpeningFcn to populate axes2