By default, the OnDrag property is exDoNothing, so nothing is happen if the user clicks the layer. The Change event occurs when the layer's value property is changed. The DragStart / Drag / DragEnd events notify your application when a layer is dragged. The ShowHandCursor property returns or sets a value that indicates whether the hand cursor is shown when it hovers a visible / selectable / dragable layer. The Clip property gets access to the layer's clipping object. The Value property of the Layer has effect only if the OnDrag property is not exDoNothing. The Selectable property returns or sets a value that indicates whether the layer is selectable. 

Currently, any layer supports any of the following operations:

• exDoMove, moves a layer, the layer's OffsetX and OffsetY indicates the current (x,y) position of the layer.
• exDoRotate, rotates a layer, the RotateAngle property indicates the currently rotation angle.
• exDoRotamove, rotates the layer by moving, the RotateAngle property indicates the currently rotation angle. In this case, the layer's RotamoveOffsetX  / RotamoveOffsetY property indicates the current (x,y) position of the layer. The exDoRotamove operation does not actually rotate the layer's view instead it moves / rotates it relative to its center.

The control fires the drag events in the following order:

• DragStart event notifies that a layer begins to drag. You can use the DragStart event to cancel the dragging operation.
• Drag event notifies that the layer is dragging. You can use the Drag event to perform other actions, on any layer during the dragging operation.
• DragEnd event notifies that the dragging the layer ends. You can use the DragEnd event to perform other actions, on any layer when dragging operation ends.

You can use the Debug property of the DragInfo object to display debugging information during dragging.