枚举Delphi中的系统端口列表 [英] Enumerating a List of systems Com Ports in Delphi

问题描述

目标：我希望能够在Delphi的系统上列出可用的COM端口。

Objective: I would like to be able to list the available COM Ports on a system in Delphi.

家庭作业：
我已阅读这个 SO线程，使用注册表枚举系统的LPT端口。我还发现，COM端口在注册表中列出 HKEY_LOCAL_MACHINE\HARDWARE\DEVICEMAP\SERIALCOMM ，但在同一个线程，这可能不可靠不同的机器和不同版本的窗口。

Homework: I have read this SO thread on enumerating the LPT ports of a system using the registry. I have also found that the COM ports are listed in the registry at HKEY_LOCAL_MACHINE\HARDWARE\DEVICEMAP\SERIALCOMM but found unanswered gesticulation in the same thread that this might not be reliable on different machines and different versions of windows.

我还发现引用使用QueryDosDevice（）但是尝试这个示例代码，我发现它似乎没有列出任何COM端口。

I also found articles referencing the use of QueryDosDevice() but upon trying this sample code, I found that it did not appear to list any COM ports at all.

问题：在Windows机器上列出COM端口的最可靠的方式（未知的Windows版本）是什么？

Question: What is the most reliable way (across unknown Windows Versions) to list the COM ports on a Windows Machine?

推荐答案

DEVICEMAP\SERIALCOMM 适用于所有NT版本。您可能需要在DYN_DATA下查找Win9x。

DEVICEMAP\SERIALCOMM is good for all NT versions. You'll probably need to look under DYN_DATA for Win9x.

使用此方法，如果您需要运行时可靠性。

Use this method if you need runtime reliability.

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