He trapped the two aliens with him in a force field. They pleaded to be let go. After Picard showed them what it's like to held against one's will, that kidnapping is wrong, he dropped the force field and ordered them off his ship. (TNG: "Allegiance") ...
onChange() (select, text, or TEXTAREA field loses focus and its value has been modified) onClick() (someone clicks on a form) onContextMenu() (user would need to right click on attack area) onControlSelect() (fires when the user is about to make a control selection of the object) ...