Public ReadOnly Property ColumnIndex As Integer

Dim instance As RangeGroupHitTestInformation
Dim value As Integer
 
value = instance.ColumnIndex

public int ColumnIndex {get;}

private void fpSpread1_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e) 
{
FarPoint.Win.Spread.RangeGroupHitTestInformation rght;
FarPoint.Win.Spread.HitTestInformation ht;
ht = fpSpread1.HitTest(e.X, e.Y);
rght = ht.RangeGroupInfo;
int x = rght.ColumnLevel;
int i = rght.ColumnIndex;
MessageBox.Show(x.ToString() + " - " + i.ToString());
}

Private Sub FpSpread1_MouseDown(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles FpSpread1.MouseDown
Dim rght As FarPoint.Win.Spread.RangeGroupHitTestInformation
Dim ht As FarPoint.Win.Spread.HitTestInformation
ht = FpSpread1.HitTest(e.X, e.Y)
rght = ht.RangeGroupInfo
Dim x As Integer = rght.ColumnLevel
Dim i As Integer = rght.ColumnIndex
MsgBox(b.ToString() & " - " & i.ToString())
End Sub