cxGrid回车添加行

将属性OptionsBehavior.FocusFirstCellOnNewRecord = True 
OptionsBehavior.GoToNextCellOnEnter = True 
OptionsBehavior.FocusCellOnCycle = True
 
此时除了修改OptionsBehavior中的属性值外，还要修改OptionData.Appending=True,