Windows 10中的虚拟COM端口：EV_TXEMPTY是否会触发？ [英] Virtual COM ports in Windows 10: Does EV_TXEMPTY fire?

问题描述

在Windows 10下写入硬件串行端口后，EV_TXEMPTY信号显示为预期。

The EV_TXEMPTY signal appears as expected following a write to a hardware serial port under Windows 10.

在写入虚拟文件后，我从未见过EV_TXEMPTY信号触发与蓝牙适配器关联的串口。

I have never yet seen the EV_TXEMPTY signal fire after a write to a virtual serial port associated with a Bluetooth dongle.

此信号是否未针对虚拟串口实现？

Is this signal not implemented for virtual serial ports?

推荐答案

Hi Mockingbird，

Hi Mockingbird,

感谢您在此处发帖。

>>此信号是否未针对虚拟串行端口实施？

>>Is this signal not implemented for virtual serial ports?

没有办公室文件说明这一点。请尝试使用
GetCommState 功能，检查您是否可以与蓝牙适配器通信。并使用

SetCommMask  设置EV_TXEMPTY事件。

There is no office document said about that. Please try to use GetCommState function to check if you can communicate with Bluetooth dongle. And also use SetCommMask to set EV_TXEMPTY event.

或者您可以尝试使用
WriteFile 函数以同步方式与串口通信。

Or you can try to use WriteFile function to communicate with serial port in a synchronous way.

最好的问候，

Sera Yu

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