Label Overlap

I've come up with a partial solution that hides/shows labels when you mouse over the bar point:

Private Sub ChartControl1_MouseMove(Button As Integer, Shift As Integer, x As Long, y As Long)    Dim lt_Ht As ChartElement    Dim lt_SeriesPt As ChartSeriesPoint    Dim lt_SeriesPtFind As ChartSeriesPoint    Dim lt_Series As ChartSeries    Dim lt_Label As ChartBarSeriesLabel       Set lt_Ht = UserControl.ChartControl1.HitTest(x, y)       If lt_Ht Is Nothing Then       Exit Sub    End If          If TypeOf lt_Ht Is ChartSeriesPoint Then       Set lt_SeriesPt = lt_Ht             For Each lt_Series In UserControl.ChartControl1.Content.Series          For Each lt_SeriesPtFind In lt_Series.Points             lt_Series.Style.Label.Visible = (lt_SeriesPt Is lt_SeriesPtFind)          Next lt_SeriesPtFind       Next lt_Series    ElseIf TypeOf lt_Ht Is ChartBarSeriesLabel Then       ' Need a way to tell if the mouse is over the point that the label is associated with       ' Or a point to the right or left, so we can show a different label    Else       For Each lt_Series In UserControl.ChartControl1.Content.Series          lt_Series.Style.Label.Visible = True       Next lt_Series    End If          End Sub

But there are some problems that maybe someone can help me with:

1) When you user moves the mouse over a label, but that label extends over another point so the mouse is actually over a different point than the label is for, I can't figure out a way to determine this.

2) Similarly, when the mouse moves over a label, I need a way to determine what point that label is associated with so I can hide the other labels. Is there anyway?

Some things that would be helpful:

1) A HitTestEx() method that returns a collection of objects in order of z-order - so if you mouse over a label, you would get a collection with: ChartBarSeriesLabel > ChartSeriesPoint, etc... that you are over. We could then loop through the collection to find the objects that we are interested in.

2) ChartObjects should have parent properties, so we can navigate easily through the object tree (For example, the ChartBarSeriesLabel and ChartSeriesPoint objects should have a Series object that gets us back up to the parent series.

Thanks for any replies.