这几个Scrollview的属性藏的比较深 这里记录下。

box
button
toggle
label
textField
textArea
window
horizontalSlider
horizontalSliderThumb
verticalSlider
verticalSliderThumb
horizontalScrollbar
horizontalScrollbarThumb
horizontalScrollbarLeftButton
horizontalScrollbarRightButton
verticalScrollbar
verticalScrollbarThumb
verticalScrollbarUpButton
verticalScrollbarDownButton
scrollView