菜单选择：

Opening函数：
openingFcn执行于窗口可见之前，这个时候你想做什么的话可以把代码写进去

function plott_OpeningFcn(hObject, eventdata, handles, varargin)
t=1/200:1/200:1;
plot(t,sin(2*pi*t*10),'r');

几个回调函数：

function Grid_off_Callback(hObject, eventdata, handles)
grid off;
function Grid_on_Callback(hObject, eventdata, handles)
grid on;
function About_Callback(hObject, eventdata, handles)
helpdlg('This is an example ','About')
function Close_Callback(hObject, eventdata, handles)
cla;%清除坐标轴
delete(handles.figure1);%关闭图形窗口

结果：(grid on不显示。。其他正常)

快捷菜单：

回调函数：

function Plot_Callback(hObject, eventdata, handles)
t=1/200:1/200:1;
plot(t,sin(2*pi*t*10),'r');% --------------------------------------------------------------------
function grid_on_Callback(hObject, eventdata, handles)
grid on;% --------------------------------------------------------------------
function grid_off_Callback(hObject, eventdata, handles)
grid off;% --------------------------------------------------------------------
function Clear_Callback(hObject, eventdata, handles)
cla;

效果：