If the event handler cancels this event, the user cannot change the text.
如果事件处理程序取消此事件,则用户无法更改该文本。
However, in this mode, the user cannot change the information that the input message delivers.
但是在此模式下,用户不能更改输入消息所交付的信息。
However, in this mode, the user cannot change the information that the input message delivers.
但是在此模式下,用户不能更改输入消息所交付的信息。
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