Re: Which Registry entry would be used to keep track of Serial Port n o.s ?

NTDEV
1

For W2K/XP look into msports.h to find the ComDB-API explained.
Why does the DDK documentation hide this API ?

Enumeration of COM-Ports seems to be one of the top secrets at
microsoft. :frowning: . I wish there would be a Howto for W9x and one for NT4
and another for W2K/XP !

| Norbert Kawulski | mailto:xxxxx@stollmann.de |
| Stollmann E+V GmbH, Development | http://www.stollmann.de |
–If it’s ISDN or Bluetooth, make sure it’s driven by Stollmann–

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2

> Enumeration of COM-Ports seems to be one of the top secrets at

Can SetupDiGetClassDevs and SetupDiEnumDeviceInterfaces help?

Max

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3

> Can SetupDiGetClassDevs and SetupDiEnumDeviceInterfaces help?

Yes, on PnP Systems, but what about NT4? How to deal with temporary absent
devices (PCMCIA, USB)? I am sure there exists a solution on each of the
mentioned systems but that is not the point. The problem is that there
are (AFAIK) no rules by MS on how to claim a port and let everyone
else know it. There should have been something like the drive-manager
where you assign drive-letters to devices. But its too
late, so we live with hacks and collisions.

| Norbert Kawulski | mailto:xxxxx@stollmann.de |
| Stollmann E+V GmbH, Development | http://www.stollmann.de |
–If it’s ISDN or Bluetooth, make sure it’s driven by Stollmann–

“Give me ambiguity or give me something else.”

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