What is the enhancement in mind? How should it look and feel?
Chat commands to toggle (Bar) Lock and Button Lock without having to open the BT Options and manually click the respective checkboxes e.g. "/bt lock" and "/bt block" (as in B Lock - Button Lock) perhaps.

Please provide any additional information below.
Sometimes in combat I've often forgotten to re-enable Button Lock and end up losing one of my lesser used actions (that I don't have key bound) by dragging it of the bar in a frantic situation. Ideally I'd like to hit a macro containing the button lock command to prevent further mishaps during the fight but there is no command to do this at the moment.

In an ideal world there would be an option to Auto-Lock Buttons during combat but this would be harder to implement than simply allowing the chat commands (although much more useful - to me anyway)

Thanks for the great addon.

EDIT: This request has already been made in this ticket: http://www.wowace.com/addons/bartender4/tickets/170-respect-toggle-action-bar-lock-keybinding/