vertical scrolling的用法和樣例：
例句
- Display a vertical scroll bar only when text is longer than the height of the control.
僅在文本比控件的高度長(cháng)時(shí)顯示垂直滾動(dòng)條。 - This example shows how to use horizontal and vertical scroll bar controls to scroll across and down an image on a form.
此示例演示如何使用水平和垂直滾動(dòng)條控件來(lái)橫向和向下滾動(dòng)窗體上的圖像。
