多窗口练习
..........\Project1.dpr
..........\Project1.dproj
..........\Project1.dproj.local
..........\Project1.identcache
..........\Project1.res
..........\Unit1.dfm
..........\Unit1.pas
..........\Unit2.dfm
..........\Unit2.pas
..........\Unit3.dfm
..........\Unit3.pas
..........\Win32
..........\.....\Debug
..........\.....\.....\Project1.exe
..........\.....\.....\Unit1.dcu
..........\.....\.....\Unit2.dcu
..........\.....\.....\Unit3.dcu
..........\__history