例5-20 ......\5.avi ......\bkgrd.c ......\bkgrd.dsp ......\bkgrd.dsw ......\bkgrd.ncb ......\bkgrd.opt ......\bkgrd.plg ......\Debug ......\.....\5.avi ......\.....\6.avi ......\.....\bkgrd.exe ......\.....\bkgrd.ilk ......\.....\bkgrd.obj ......\.....\bkgrd.pch ......\.....\bkgrd.pdb ......\.....\vc60.idb ......\.....\vc60.pdb ......\Makefile