... 命令按钮 {İ} [BT] command button {İ} [BT] 取消按钮 {fi.} to cancel button {fi.} 备用按钮 {İ} emergency button {İ} ...
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HOLD BUTTON TO CANCEL 按住按钮以
Change the second button to be of type Cancel.
将第二个按钮的类型改为Cancel。
I presume it's not only acceptable, but also required to have a cancel button for things like downloading files?
我觉得这不仅是可以接受的，也很必要为比如下载文件的过程加入取消按钮。
If your application has a button to cancel a long-running operation but you're doing work in the UI thread, the cancellation event won't be delivered until after the operation has finished!
如果应用程序有一个按钮用于取消某个长时间运行的操作，而您正在使用UI线程执行操作，那么这个取消事件只有到UI线程所做的操作完成后才会被处理！
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