GUI带有右键菜单，带有时间显示的

 %带有右键菜单的GUI
 figure('Menubar','none');
 h = uicontextmenu;
 uimenu(h,'Label','A');
 uimenu(h,'Label','B');
 set(gcf,'Uicontextmenu',h);

 %获得当前时间
 datestr(now)

右键菜单

 function varargout = GUI17(varargin)
 % GUI17 MATLAB code for GUI17.fig
 %      GUI17, by itself, creates a new GUI17 or raises the existing
 %      singleton*.
 %
 %      H = GUI17 returns the handle to a new GUI17 or the handle to
 %      the existing singleton*.
 %
 %      GUI17('CALLBACK',hObject,eventData,handles,...) calls the local
 %      function named CALLBACK in GUI17.M with the given input arguments.
 %
 %      GUI17('Property','Value',...) creates a new GUI17 or raises the
 %      existing singleton*.  Starting from the left, property value pairs are
 %      applied to the GUI before GUI17_OpeningFcn gets called.  An
 %      unrecognized property name or invalid value makes property application
 %      stop.  All inputs are passed to GUI17_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 GUI17

 % Last Modified by GUIDE v2. -Jan- ::

 % Begin initialization code - DO NOT EDIT
 gui_Singleton = ;
 gui_State = struct('gui_Name',       mfilename, ...
                    'gui_Singleton',  gui_Singleton, ...
                    'gui_OpeningFcn', @GUI17_OpeningFcn, ...
                    'gui_OutputFcn',  @GUI17_OutputFcn, ...
                    'gui_LayoutFcn',  [] , ...
                    'gui_Callback',   []);
 if nargin && ischar(varargin{})
     gui_State.gui_Callback = str2func(varargin{});
 end

 if nargout
     [varargout{:nargout}] = gui_mainfcn(gui_State, varargin{:});
 else
     gui_mainfcn(gui_State, varargin{:});
 end
 % End initialization code - DO NOT EDIT

 % --- Executes just before GUI17 is made visible.
 function GUI17_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 GUI17 (see VARARGIN)

 % Choose default command line output for GUI17
 handles.output = hObject;

 handles.ht = timer;
 set(handles.ht, 'ExecutionMode', 'FixedRate');
 set(handles.ht, 'Period', );
 set(handles.ht, 'TimerFcn', {@dispnow,handles})

 start(handles.ht);

 % Update handles structure
 guidata(hObject, handles);

 % UIWAIT makes GUI17 wait for user response (see UIRESUME)
 % uiwait(handles.figure1);

 % --- Outputs from this function are returned to the command line.
 function varargout = GUI17_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{} = handles.output;

 function dispnow(hObject , eventdata, handles)
 set(handles.disptime, 'String', datestr(now));

带有时间显示