一键更换桌面图片
................\client.cfg
................\client.dof
................\client.dpr
................\client.res
................\Project1.cfg
................\Project1.dof
................\Project1.dpr
................\Project1.exe
................\Project1.res
................\Unit1.dcu
................\Unit1.ddp
................\Unit1.dfm
................\Unit1.pas
................\Unit1.~ddp
................\Unit1.~dfm
................\Unit1.~pas
................\Unit2.dcu
................\Unit2.ddp
................\Unit2.dfm
................\Unit2.pas