private Interactive GetTarget(IInputRoot root, Point local)
{
var target = root.InputHitTest(local)?.GetSelfAndVisualAncestors()?.OfType <Interactive>()?.FirstOrDefault();
if (target != null && DragDrop.GetAllowDrop(target))
{
return(target);
}
return(null);
}
private IInputElement SetPointerOver(IPointerDevice device, IInputRoot root, Point p)
{
Contract.Requires <ArgumentNullException>(device != null);
Contract.Requires <ArgumentNullException>(root != null);
var element = root.InputHitTest(p);
if (element != root.PointerOverElement)
{
if (element != null)
{
SetPointerOver(device, root, element);
}
else
{
ClearPointerOver(device, root);
}
}
return(element);
}