IDimensionViewer.DropTargetNode

Syntax

DropTargetNode: Integer;

Description

The DropTargetNode property determines the component node, over which the user is currently dragging another node.

Comments

It is used for Drag&Drop mechanism setup. Assigning a value to the property results in node selection.

It is relevant only for the DimensionTree component.

Example

Executing the example requires a form with the Button1 button, the DimensionTree component named DimensionTree1 and the UiDimension component that is a data source for DimensionTree1. The Drag&Drop mechanism is enabled for DimensionTree1.

Sub DimensionTree1OnDragOver(Sender: Object; Args: IDragEventArgs);

Var

Node: Integer;

Begin

Node := DimensionTree1.GetItemAt(Args.Point);

If Node <> -1 Then

DimensionTree1.DropTargetNode := Node;

End If;

Args.Effect := DragDropEffects.Move;

End Sub DimensionTree1OnDragOver;

After executing the example, when dragging any node in the DimensionTree1 component, the node being dragged becomes selected.