I want to know that when we implement any System.Event in the program, doest that event and the event handler run in Main thread of the program or they get executed in th开发者_开发问答e seperate thread ?
Thanks
The event gets executed on the thread that raises the event.
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是否在对方手机上显示已读，是由用户自行设置的。依次打开iPhone的“设置-信息”，会有一个“发送已读回执”的选项。将其打开，对方就能看到你，是否已经阅读了本条iMessage信息。将其关闭，对方就看不到。
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