GWT provides Listener interfaces for mouse events, keyboard events, change events, and so forth, as well as several adapter and helper classes for added convenience.
GWT为鼠标事件、键盘事件、修改事件等提供了Listener接口，还提供了几个适配器和助手类，以获得更多方便。
GWT provides Listener interfaces for mouse events, keyboard events, change events, and so forth, as well as several adapter and helper classes for added convenience.
GWT为鼠标事件、键盘事件、修改事件等提供了Listener接口，还提供了几个适配器和助手类，以获得更多方便。
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