[barqcf1986]

x=0：pi/100:2*pi;
y=2*exp(-0.5*x).*sin(2*pi*x);
hl=plot(x,y);
hc=uicontextmenu;
hls=uimenu(hc,'Label','线型');
hlw=uimenu(hc,'Label','线宽');
uimenu(hls,'Label','虚线','Call','set(hl,''LineStyle'','':'');');
uimenu(hls,'Label','实线','Call','set(hl,''LineStyle'',''-'');');
uimenu(hlw,'Label','加宽','Call','set(hl,''LineWidth'',2);');
uimenu(hlw,'Label','变细','Call','set(hl,''LineWidth'',0.5);');
set(hl,'UIContextMenu',hc);
将所有的双引号都改成两个单引号就可以了。