File list (Check if you may need any files):
014.只允许建立一次子窗体的MDI程序\Child1Unit.dcu
.................................\Child1Unit.dfm
.................................\Child1Unit.pas
.................................\Child2Unit.dcu
.................................\Child2Unit.dfm
.................................\Child2Unit.pas
.................................\MainUnit.dcu
.................................\MainUnit.dfm
.................................\MainUnit.pas
.................................\prjTvCbo.dpr
.................................\prjTvCbo.res
.................................\Project1.cfg
.................................\Project1.dof
.................................\Project1.dpr
.................................\Project1.res
.................................\unitFrmTv.dfm
.................................\unitFrmTv.pas
014.只允许建立一次子窗体的MDI程序