[UWP] [C ++] [StreamSocket]读/写回调 [英] [UWP][C++][StreamSocket] read/write callback
问题描述
亲爱的所有人,
我正在使用DataReader / DataWriter来读取/写入蓝牙数据。我很难解决异步问题,即我使用
I am using DataReader/DataWriter to read/write data from Bluetooth. I struggle a async issue, that is I use
create_task(m_writer-> StoreAsync())。然后([this](task< unsigned int> writeTask){... }
create_task(m_writer->StoreAsync()).then([this](task<unsigned int> writeTask) { ... }
写出数据。但是,我不知道如何在"then"内部建立一个回调函数。我需要等待写入结果然后再做一步。
to write data out. However, I don't have an idea on how to make a callback function inside "then". I need to wait for the write result before doing next step.
有人可以为我提供一些回调示例吗?
Does anyone can provide some callback example for me?
谢谢。
推荐答案
你好JackyLamJackyLam,
Hi JackyLamJackyLam,
你为什么要在里面制作一个回调函数呢? ;?在c ++中,我们应该能够使用"then"来等待异步方法。
Why do you want to make a callback function inside "then"? In c++ we should be able to use "then" to wait the async method.
当我们将CreatAsync()与creat_task()和.then()一起使用时,它将等待StoreAsync()完成。所以我们不需要担心这个。
When we use StoreAsync() with creat_task() and .then(), it will wait for the StoreAsync() to finish. So we do not need to worry about this.
最诚挚的问候,
Jayden Gu
Jayden Gu
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