实现类似Excel中的冻结窗格，可根据需要设置freezeColumn（冻结列数）及frreezeRow（冻结行数）属性，还可设置bgColor冻结窗口背景色。具体可参看下面的例子

-Freeze Panes in Excel, to achieve a similar (to freeze the number of rows) according to the need to set freezeColumn (to freeze the number of columns) and frreezeRow property, can also set bgColor freeze the window background color. Concrete can be found in the following example