DropTargetNode: ITreeListNode;
The DropTargetNode property determines the node of the component, over which user is dragging another node at the moment.
It is used to set up the Drag&Drop mechanism. Setting the value causes node selection.
Executing the example requires a form, a button named Button1 on it and the TreeList component named TreeList1. The Drag&Drop mechanism is activated for TreeList1.
Sub TreeList1OnDragOver(Sender: Object; Args: IDragEventArgs);
Var
Node: ITreeListNode;
Begin
Node := TreeList1.GetItemAt(Args.Point);
If Node <> Null Then
TreeList1.DropTargetNode := Node;
End If;
Args.Effect := DragDropEffects.Move;
End Sub TreeList1OnDragOver;
After executing the example when any node is dragged in the TreeList1 component, the node, over which the dragging is executed, is selected.
See also: