www.gusucode.com > matlab从零到进阶程序与数据 > matlab从零到进阶程序与数据/第5章 图形用户界面（GUI）编程/案例5.6-5/exam.m

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

% Last Modified by GUIDE v2.5 06-May-2010 12:06:14

% Begin initialization code - DO NOT EDIT
gui_Singleton = 1;
gui_State = struct('gui_Name',       mfilename, ...
                   'gui_Singleton',  gui_Singleton, ...
                   'gui_OpeningFcn', @exam_OpeningFcn, ...
                   'gui_OutputFcn',  @exam_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 exam is made visible.
function exam_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 exam (see VARARGIN)
if  isempty(find_system('Name','ex'))
    open_system('ex.mdl');
end
evalin('base','clear');

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

% Update handles structure
guidata(hObject, handles);

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


% --- Outputs from this function are returned to the command line.
function varargout = exam_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 slider movement.
function slider1_Callback(hObject, eventdata, handles)
% hObject    handle to slider1 (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,'Value') returns position of slider
%        get(hObject,'Min') and get(hObject,'Max') to determine range of slider
value=get(hObject,'value');
set_param('ex/Gain','Gain',num2str(value));
set_param('ex/Transfer','Numerator',num2str(value));
set(handles.edit1,'string',value);

sim('ex',[],simset('DstWorkspace ','base'));



% --- Executes during object creation, after setting all properties.
function slider1_CreateFcn(hObject, eventdata, handles)
% hObject    handle to slider1 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    empty - handles not created until after all CreateFcns called

% Hint: slider controls usually have a light gray background.
if isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))
    set(hObject,'BackgroundColor',[.9 .9 .9]);
end



function edit1_Callback(hObject, eventdata, handles)
% 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


% --- 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)
try
simout=evalin('base','simout');
tout=evalin('base','tout');
axes(handles.axes1);
cla;
plot(tout,simout(:,1),'y');
hold on
plot(tout,simout(:,2),'m');
set(gca,'color','k');
axis([0 10 -5 5]);
set(gca,'xcolor','w','ycolor','w');
set(gca,'xtick',[0 2 4 6 8 10],'ytick',[-5 0 5])
grid on
catch
    msgbox('请先运行仿真！');
end