vb 垂直滚动条定位

Sub TreeFill3(cTime As String, ByVal cKey As String)
  
   Tree3.Nodes.Clear
  
   ' 循环填充tree1控件内容
   Dim c As String
   Dim cNode As Node
   Dim cSql As String
   Dim cRec As rdoResultset
   Dim cRec1 As rdoResultset
   Dim i As Integer
  
   cSql = "SELECT cType_Name FROM tbl_Abs_Net WHERE cType='TYPE' AND iCount = 3"
   Set cRec = gData.OpenResultset(cSql, rdOpenKeyset)
   cRec.MoveFirst
   i = 2
   Do While cRec.EOF = False
      c = Trim(cRec(0))
      Set cNode = Tree3.Nodes.Add(, , , , i)
      cNode.Key = "r" + Trim(cRec(0))
      cNode.Text = c
      cNode.Expanded = True        '垂直滚动条起始位置在顶上
      cSql = "SELECT  A.iID,A.cTitle FROM tbl_Question A,tbl_Question_Oper O " _
         & "WHERE A.iId=O.iID AND O.cOper_Code='" & gUserCode & "' AND A.cAnswer<>'' AND A.cType='" & c & "' " _
        & " AND ((A.cTitle LIKE '%" & cKey & "%') OR (A.cQuestion LIKE '%" & cKey & "%') OR (A.cAnswer LIKE '%" & cKey & "%')) "
      cSql = cSql + cTime + " ORDER BY A.iID Desc"
      Set cRec1 = gData.OpenResultset(cSql, rdOpenKeyset)
      If cRec1.RowCount <> 0 Then
         Do While cRec1.EOF = False
            c = Trim(CStr(cRec1(0))) + " " + Trim(cRec1(1))
            Set cNode = Tree3.Nodes.Add("r" & Trim(cRec(0)), tvwChild, , , 1)
            cNode.Text = c
            cNode.Key = "d" & Trim(CStr(cRec1(0)))
'            Tree3.Nodes("d" & Trim(cRec1(0))).EnsureVisible      '垂直滚动条起始位置在底部
            cRec1.MoveNext
         Loop
      End If
      i = i + 1
      cRec.MoveNext
   Loop
   cRec.Close
   cRec1.Close
   cNodeIndex1 = 1
        
End Sub

鼠标显示的形式: Screen.MousePointer = 11      显示为正在处理，实心圆圈