注意，这些元素上设置了与鼠标操作相关的三个事件处理函数。
Notice that these elements have three different mouse action-related event handlers.
为了设置筛选器，把鼠标移动到列标题的左边。
To set a filter, fly over the left-hand side of a column header.
可以设置鼠标的样子，隐藏鼠标，设置鼠标的移动范围。
You can set the mouses appearance, hidden mouse, the mouses range of movement.
如果鼠标捕获发生在别处，则鼠标捕获设置到该元素。
If mouse capture is elsewhere, the mouse capture is set to that element.
如果鼠标捕获发生在别处，则鼠标捕获设置到该元素。
If mouse capture is elsewhere, the mouse capture is set to that element.
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