Base class for all "Actions". An Action is an object, that receives various MouseInput events once it has been "Set" by a call to SetAction(Action). After performing the required tasks, the Action is removed from the ActionStack and the previous active action is resumed. The action on the bottom of the action stack is the SelectObjectsAction. Use the ConstructAction for typical drawing purposes, because it provides a convenient set of methods. If an action object is set by a call to SetAction(Action) the following sequence of calls to the new and the old action is executed:

• new action: OnSetAction()()()() (as a reaction to SetAction(Action))
• old action: OnInactivate(Action, Boolean) (may call RemoveActiveAction()()()() if desired)
• new action: OnActivate(Action, Boolean) (from now on the new action may receive mouse events).
• After the new action calls RemoveThisAction()()()() or someone calls RemoveActiveAction()()()() the new action will receive OnInactivate(Action, Boolean).
• The old action (if still on the stack) will receive a call to OnActivate(Action, Boolean) and finally
• the new action will receive a call to OnRemoveAction()()()() as a last call.

public abstract class Action : ICommandHandler

Public MustInherit Class Action _
	Implements ICommandHandler

public ref class Action abstract : ICommandHandler