MATLAB实验7

1、利用GUIDE实现，选择不同菜单，显示不同界面

界面一：左侧图片按钮，右侧图片区

界面二：左侧绘图区，右侧sin按钮及cos按钮GUIDE页面

选择界面一

点击SIN按钮，得到正弦函数图像

点击COS按钮，得到COS函数图像

选择界面二

点击左侧按钮，得到图像

再次点击左侧按钮，图像消失

function G7_OpeningFcn(hObject, eventdata, handles, varargin) handles.output = hObject;

handles.x=0:pi/100:2*pi;

guidata(hObject, handles);

function sin_Callback(hObject, eventdata, handles)

% hObject handle to sin (see GCBO)

% eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) axes(handles.axes1);

plot(sin(handles.x));

% --- Executes on button press in cos.

function cos_Callback(hObject, eventdata, handles)

% hObject handle to cos (see GCBO)

% eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) axes(handles.axes1);

plot(cos(handles.x));

% --- Executes on button press in clear.

function clear_Callback(hObject, eventdata, handles)

% hObject handle to clear (see GCBO)

% eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) delete(allchild(handles.axes1));

%

--------------------------------------------------------------------

function s1_Callback(hObject, eventdata, handles)

% hObject handle to s1 (see GCBO)

% eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA)

try

delete(allchild(handles.pic));

end

schild1=[handles.sin handles.cos handles.clear handles.axes1]; schild2=[handles.pic handles.picp];

set(schild1,'visible','on');

set(schild2,'visible','off');

%

--------------------------------------------------------------------

function s2_Callback(hObject, eventdata, handles)

% hObject handle to s2 (see GCBO)

% eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA)

try

delete(allchild(handles.axes1));

end

schild1=[handles.sin handles.cos handles.clear handles.axes1]; schild2=[handles.pic handles.picp];

set(schild2,'visible','on');

set(schild1,'visible','off');

%

--------------------------------------------------------------------

% --- Executes on button press in picp.

function picp_Callback(hObject, eventdata, handles)

% hObject handle to picp (see GCBO)

% eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) axes(handles.pic);

imshow('lena.bmp');

set(handles.picp,'visible','off');

set(handles.picp2,'visible','on');

% --- Executes on button press in picp2.

function picp2_Callback(hObject, eventdata, handles)

% hObject handle to picp2 (see GCBO)

% eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) delete(allchild(handles.pic));

set(handles.picp,'visible','on');

set(handles.picp2,'visible','off');

2、datestr（now）函数可获得当前时间,通过静态文本显示。

GUIDE窗口

动态时间窗口

function G2_OpeningFcn(hObject, eventdata, handles, varargin)

handles.output = hObject;

handles.timer=timer('TimerFcn',{@timerun,handles},'period',1.0,' ExecutionMode','fixedrate');

start(handles.timer);

guidata(hObject, handles);

function timerun(hObject, eventdata, handles)

str=datestr(now,'HH:MM:SS');

set(handles.t,'string',str);

% --- Executes on button press in close.

function close_Callback(hObject, eventdata, handles)

% hObject handle to close (see GCBO)

% eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) stop(handles.timer);

close(gcf);

3、鼠标画线

function G3_OpeningFcn(hObject, eventdata, handles, varargin)

handles.output = hObject;

global down;

down = 0;

axis([0 1 0 1]);

axis off;

set(gcf,'color','w');

guidata(hObject, handles);

function figure1_WindowButtonDownFcn(hObject, eventdata, handles) global down;

global pos;

down = 1;

pos=get(gca,'currentpoint');

function figure1_WindowButtonMotionFcn(hObject, eventdata, handles) global down

global pos;

if down==1;

pos1=get(gca,'currentpoint');

line([pos(1,1),pos1(1,1)],[pos(1,2),pos1(1,2)]);

pos=pos1;

end

function figure1_WindowButtonUpFcn(hObject, eventdata, handles)

global down;

down=0;

4、利用GUIDE设计登陆界面，要求实现按钮登陆和回车登陆两种方式

function load_Callback(hObject, eventdata, handles)

id = get(handles.id, 'string');

psw = get(handles.psw, 'string');

if strcmp(id,'matlab') && strcmp(psw,'matlab')

G3;

end

% --- Executes on key press over psw with no controls selected. function psw_KeyPressFcn(hObject, eventdata, handles)

c=get(gcf,'Currentcharacter');

id = get(handles.id, 'string');

psw = get(handles.psw, 'string');

if double(c)==13 strcmp(id,'matlab') && strcmp(psw,'matlab')

G3;

end

附加题：

1、模拟下图界面，编写程序来实现两数相加的功能

2、模拟论坛抽奖程序（实现方式不限，加分题）

这道题的界面我用了较多的功能，而不仅仅是get随机数。

基本功能：由开始按钮触发循环0~100随机函数，并将开始按钮隐藏，停止按钮显示。按下停止按钮就直接把当前循环到的随机数显示在静态文本框中。

拓展功能：点击记录号码可以将当前静态文本框中的号码记录到下面的红色文本框

中，无论随机函数是否还在循环。一共可以记录三个号码。三个已记录的文本框的号码可以单独被取消，取消后这个文本框可以再使用。另外，为了使三个文本框都已有数据时，记录号码的按钮可以不再显示，特别设置一个计时器来检测当前三个文本框的状态，至少有一个文本框没有记录数据时，按钮显示，文本框全部占用时，文本框消失。

function GM2_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 GM2 (see VARARGIN)

% Choose default command line output for GM2

handles.output = hObject;

handles.timer=timer('TimerFcn',{@check_num,handles},'period',0.0 05,'ExecutionMode','fixedrate');

start(handles.timer);

% Update handles structure

guidata(hObject, handles);

function check_num(hObject, eventdata, handles)

if ~isempty(get(handles.num1,'string'))&&

~isempty(get(handles.num2,'string')) &&

~isempty(get(handles.num3,'string'))

set(handles.record,'visible','off');

else

set(handles.record,'visible','on');

end

function start_Callback(hObject, eventdata, handles) set(handles.start,'visible','off');

set(handles.stop,'visible','on');

while(1)

num=uint8(100*rand());

set(handles.number,'string',num2str(num));

pause(0.05);

x=get(handles.stop,'visible');

if strcmp(x,'off')

break;

end

end

function stop_Callback(hObject, eventdata, handles)

set(handles.start,'visible','on');

set(handles.stop,'visible','off');

function record_Callback(hObject, eventdata, handles) num=get(handles.number,'string');

if isempty(get(handles.num1,'string'))

set(handles.num1,'string',num);

elseif isempty(get(handles.num2,'string'))

set(handles.num2,'string',num);

elseif isempty(get(handles.num3,'string'))

set(handles.num3,'string',num);

end

function cancle1_Callback(hObject, eventdata, handles) try

set(handles.num1,'string','');

end

function cancle2_Callback(hObject, eventdata, handles) try

set(handles.num2,'string','');

end

function cancle3_Callback(hObject, eventdata, handles) try

set(handles.num3,'string',''); end