【求助】那位高手给讲讲回调函数吧

[dzzz-001]

看看这个程序就会理解的：

str1= ' 信号延迟(s) =' ;
htext=uicontrol(gcf, 'style' , 'text' , ... % 制作静态说明文本框
'foregroundcolor','k','backgroundcolor',[0.3 0.8 0.6],'fontname','行书','fontsize' ,10,'position' ,[0.56,0.085,0.22,0.06], ...
'string' ,[str1,sprintf( '%1.4g' ,t0)]);
hslider=uicontrol(gcf, 'style' , 'slider' , ... % 创建滑动键
'position' ,[0.56,0.06,0.22,0.05], ...
'max' ,2, 'min' ,-2, ...
'sliderstep' ,[0.01,0.05], ...
'Value' ,0);
set(hslider, 'callback' ,[ ... % 操作滑动键 , 引起回调
't0=get(gcbo,''value'');' , ... % 获得滑动键状态值
'other(htext,str1,t0,htext1,str2,w0,h_axes3,h_axes4)' ]); % 被回调的函数文件