cdedit是什么组件？cdedit.dcu提示找不到？ txtHostname : TCDEdit; ( 积分: 5 )

cdedit是什么组件？cdedit.dcu提示找不到？
txtHostname : TCDEdit;

txtHostname := TCDEdit.Create(Self);
txtHostname.Parent := UInfo;
txtHostname.Left := 260;
txtHostname.Top := 8;
txtHostname.Width := 148;
txtHostname.Height := 13;
txtHostname.Color := clBtnFace;
txtHostname.BorderStyle := bsNone;
txtHostname.TextAlignment := taRightJustify;