add_state

Description:

public bool add_state (StateType type)

Adds the state of the specified type to the state set if it is not already present.

Note that because an StateSet is a read-only object, this method should be used to add a state to a newly-created set which will then be returned by ref_state_set . It should not be used to modify the existing state of an object. See also notify_state_change.

Parameters:

this	an StateSet
type	an StateType

Returns:

true if the state for type is not already in this.