# onClick `onClick(self, event, button, x, y)`
The computercraft event which triggers this method is `mouse_click` and `monitor_touch`. Here is a example on how to add a onClick event to your button: ```lua local basalt = require("basalt") local main = basalt.createFrame() local button = main:addButton() :setPosition(3,3) :setSize(12,3) :setText("Click") function buttonOnClick() basalt.debug("Button got clicked!") end button:onClick(buttonOnClick) ```