exa6_2.m

有关matlab r2007的实用教程

t=(-5*pi:pi/40:5*pi)+eps;
y=sin(t)./t;
hline=plot(t,y);                            %绘制Sa曲线
cm=uicontextmenu;                        %创建现场菜单 
%制作具体菜单项，定义相应的回调
uimenu(cm,'label','green','callback','set(hline,''color'',''g''),')
uimenu(cm,'label','blue','callback','set(hline,''color'',''b''),')
uimenu(cm,'label','red','callback','set(hline,''color'',''r''),')
set(hline,'uicontextmenu',cm)                %将cm现场与Sa曲线相联系