@echo off&mode con cols=80 lines=13&title,&setlocal,EnableDelayedExpansion&color 02
set a=To XXX XXX:
set b=距离不代表分离，没联系不代表忘记，没通电话不代表冷落。祝你生日快乐，圣诞快乐，新年快乐，永远快乐……
set c= ------ by Lxmxn
set d= 2006-12-24
echo/&echo\
for %%i in (a b c d) do (
set/p= <nul
for /l %%a in (0,1,100) do (
if not "!%%i:~%%a,1!"=="" (
if %%a==24 echo.&echo;
set/p= !%%i:~%%a,1!<nul
ping 127.1 -n 1 >nul
)
)
echo;&echo;
)
for /l %%i in (0x1,0x1,0x9) do (
set /a b=%%i ">>" 1
::call :modify %%i
set a=%%i
color !a!!b!
ping 127.1 -n 2 >nul)
ping 127.1 -n 3 >nul
goto :print
:end
echo.&echo.
ping 127.0.0.1 -n 7 >nul 2>nul
goto :eof

:print
cls&color 04&echo\&echo\&echo\&for /f "delims=" %%a in ('more +38 %0') do echo %%a
mshta vbscript:CreateObject("SAPI.SpVoice").Speak("Happy birthday to you!")(Window.close)
goto :end
这是我在站上看到的BAT 就是搞不懂它是怎么让文字逐个的延迟显示出来,还请能人帮我解释下里面的""!%%i:~%%a,1!"这一类的变量是什么意思!

参考：
http://www.cn-dos.net/forum/viewthread.php?tid=25746

以及 变量延迟 。

谢谢斑竹 受教了