typestring - The type of the event, can be mouseDown, mouseUp, mouseEnter, mouseLeave, contextMenu, mouseWheel or mouseMove.事件的类型,可以是mouseDown、mouseUp、mouseEnter、mouseLeave、contextMenu、mouseWheel或mouseMove。
xInteger
yInteger
buttonstring (optional) - The button pressed, can be left, middle, right.按下的按钮,可以是left、middle或right。