鼠标支持有两个主要用途：坐标跟踪和缩放。

Mouse support has two main USES: coordinate tracking, and zooming.

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支持响应鼠标滚轮事件。

The support for reacting to mouse wheel events.

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遗憾的是，在要使用的鼠标滚轮支持功能中仍存在错误（有关详细信息请参阅 参考资料）。

Unfortunately, there is still a bug in the mouse wheel support capabilities to be used (see Resources for details).

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