When layer rotation is enabled , a large grip is shown at the bottom of layers which can be clicked to rotate the layer. If this option is not include, user can drag rotate anywhere outside of the layer area.

public bool ShowRotationGrip { get; set; }

Public Property ShowRotationGrip As Boolean
	Get
	Set

public:
property bool ShowRotationGrip {
	bool get ();
	void set (bool value);
}