gtk:toggle-action-active (object)

object -- a gtk:toggle-action object
is-active -- a boolean whether the action should be checked or not

Accessor of the active slot of the gtk:toggle-action class. The gtk:toggle-action-active function returns the checked state of the toggle action. The (setf gtk:toggle-action-active) function sets the checked state. The gtk:toggle-action-active function has been deprecated since version 3.10 and should not be used in newly written code.