文件后缀名变更\Project1.cfg ..............\Project1.dof ..............\Project1.dpr ..............\Project1.exe ..............\Project1.res ..............\Unit1.dcu ..............\Unit1.ddp ..............\Unit1.dfm ..............\Unit1.pas ..............\Unit1.~ddp ..............\Unit1.~dfm ..............\Unit1.~pas 文件后缀名变更