protected override void OnMouseMove(MouseEventArgs e)
{
Point pt = e.GetPosition(this);
HitTestResult result = VisualTreeHelper.HitTest(this, pt);
if (result == null)
{
ToolTipController.Move(null, null);
}
else
{
DrawingVisual hit = result.VisualHit as DrawingVisual;
object tag = (hit != null) ? hit.ReadLocalValue(FrameworkElement.TagProperty) : null;
ToolTipController.Move(ToolTipContentProvider, tag);
}
}
protected override void OnMouseLeave(MouseEventArgs e)
{
base.OnMouseLeave(e);
ToolTipController.Move(null, null);
}