I want to connect my webcam with GUI but whenever i build a GUI and put my camera specification code in its .m file and try to run it an error occur. Error: Function definitions are not permitted in this context.

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Hamza Bilal 2018-4-13

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/394767-i-want-to-connect-my-webcam-with-gui-but-whenever-i-build-a-gui-and-put-my-camera-specification-code

GUI4.m

function varargout = GUI(varargin) % GUI MATLAB code for GUI.fig % GUI, by itself, creates a new GUI or raises the existing % singleton*. % % H = GUI returns the handle to a new GUI or the handle to % the existing singleton*. % % GUI('CALLBACK',hObject,eventData,handles,...) calls the local % function named CALLBACK in GUI.M with the given input arguments. % % GUI('Property','Value',...) creates a new GUI or raises the % existing singleton*. Starting from the left, property value pairs are % applied to the GUI before GUI_OpeningFcn gets called. An % unrecognized property name or invalid value makes property application % stop. All inputs are passed to GUI_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 GUI

% Last Modified by GUIDE v2.5 13-Apr-2018 15:50:45

% Begin initialization code - DO NOT EDIT gui_Singleton = 1; gui_State = struct('gui_Name', mfilename, ... 'gui_Singleton', gui_Singleton, ... 'gui_OpeningFcn', @GUI_OpeningFcn, ... 'gui_OutputFcn', @GUI_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 GUI is made visible. function GUI_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 GUI (see VARARGIN)

% Choose default command line output for GUI handles.output = hObject;

axes(handles.axes1); vid=videoinput('winvideo', 2); hImage=image(zeros(352,288,3),'Parent' handles.axes1); preview(vid,hImage);

% Update handles structure guidata(hObject, handles);

% UIWAIT makes GUI wait for user response (see UIRESUME) % uiwait(handles.figure1);