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//新建事件ue_vscroll,event id: ue_vscroll
Long ll_RowCount, ll_Row, ll_Tmp
String ls_Max, ls_Position, ls_Detail
ll_RowCount = This.RowCount()
ls_Max = This.Object.DataWindow.VerticalScrollMaximum
ls_Position = This.Object.DataWindow.VerticalScrollPosition
ls_Detail = This.Object.DataWindow.Detail.Height
IF ls_Max = '0' THEN RETURN
IF ls_Position = '0' THEN This.SetRow(1)
ll_Tmp = ( Long(ls_Max) - Long(ls_Position) ) / Long(ls_Detail)
ll_Row = ll_RowCount - ll_Tmp
This.SetRow(ll_Row)