x=0:pi/100:2*pi;
y=2*sin(5*x).*sin(x);
hl=plot(x,y);
hc=uicontextmenu;             %建立快捷菜單
hls=uimenu(hc,'Label','線型');    %建立菜單項
hlw=uimenu(hc,'Label','線寬');
uimenu(hls,'Label','虛線','Call','set(hl,''LineStyle'','':'');');
uimenu(hls,'Label','實線','Call','set(hl,''LineStyle'',''-'');');
uimenu(hlw,'Label','加寬','Call','set(hl,''LineWidth'',2);');
uimenu(hlw,'Label','變細','Call','set(hl,''LineWidth'',0.5);');
set(hl,'UIContextMenu',hc);     %將該快捷菜單和曲線對象聯系起來