private void EntityView_DragDrop(object sender, DragEventArgs e)
{
EntityTreeNode NewNode;
if (e.Data.GetDataPresent(typeof(EntityTreeNode).FullName, false))
{
System.Drawing.Point pt = ((TreeView)sender).PointToClient(new System.Drawing.Point(e.X, e.Y));
EntityTreeNode DestinationNode = (EntityTreeNode)((TreeView)sender).GetNodeAt(pt);
NewNode = (EntityTreeNode)e.Data.GetData(typeof(EntityTreeNode).FullName);
if (DestinationNode == null)
{
if (NewNode.Entity.Parent != null)
{
NewNode.Entity.Parent.RemoveEntity(NewNode.Entity, true);
NewNode.Remove();
EntityView.Nodes.Add(NewNode);
}
}
else
if (DestinationNode.TreeView == EntityView)
{
Entity ent = DestinationNode.Entity;
do
{
if (NewNode.Entity == ent)
{
return;
}
ent = ent.Parent;
} while (ent != null);
EntityView.BeginUpdate();
NewNode.Remove();
DestinationNode.Entity.AddEntity(NewNode.Entity);
DestinationNode.Nodes.Add(NewNode);
DestinationNode.Expand();
EntityView.EndUpdate();
}
}
}