# DragAndDrop.HierarchyDropHandler

> Handler for the Hierarchy.

## Definition

* **Type:** Delegate
* **Namespace:** [UnityEditor](/engine/6000.7/script-reference/unityeditor.md)
* **Assembly:** UnityEditor.CoreModule

> **Warning:**
>
> **Removed.** Use HierarchyDropHandlerV2 instead

```csharp
public delegate DragAndDropVisualMode DragAndDrop.HierarchyDropHandler(int dropTargetInstanceID, HierarchyDropFlags dropMode, Transform parentForDraggedObjects, bool perform)
```