设置什么倒计时?打开c:\windows\system32\cmd.exe,就是输入win+r然后输cmd,会弹出来一个窗口输入at 10:00 cmd.exe然后在10点时就会弹窗cmd出来。vb做法:新建一个工程,添加一个label1与timer1,在timer1中输代码:public aprivate sub timer1_timer()on error resume nextif a="" thena=inputbox("输入将来时间:(精确到秒)")end ifif a="" thenmsgbox"不得为空!",16+4096,"err"exit subend ifb=timeb=replace(b,":","")a=replace(a,":","")b1=left(b,2)b1=b1 * 3600b2=mid(b,3,4)b2=b2*60b3=right(b,2)b=b1+b2+b3 '统计为秒a1=left(a,2)a1=a1 * 3600a2=mid(a,3,4)a2=a2*60a3=right(a,2)aadd=a1+a2+a3if aadd<b thenaadd=aadd+24 * 3600end if***.caption="距离时间到还有:" & aadd-b & " 秒"end sub别忘了设置timer那个i开头的属性,0无法工作,设100好了