A QUESTION ON EVENTS WITH WEAPONS AND SKILLS (RMXP)

Is there anyway to get a common event to specify when a weapon is equipped that the character can only use the skills for that weapon and the other skills not able to be selected when using a different weapon?

EDIT: example: I have a hunter class that can use a bow and a gun. What i'm looking for is a way to have the bow skills only usable when the bow is equipped and a way to have the gun skills be only usable when the gun is equipped to the character.