GUID_DEVINTERFACE_COMPORT
The GUID_DEVINTERFACE_COMPORT device interface class is defined for COM ports.
| Attribute | Setting |
|---|---|
| Identifier | GUID_DEVINTERFACE_COMPORT |
| Class GUID | {86E0D1E0-8089-11D0-9CE4-08003E301F73} |
Remarks
Drivers for serial ports register instances of this device interface class to notify the operating system and applications of the presence of COM ports.
The system-supplied function driver for serial ports registers an instance of this device interface class for a serial port.
Using the device interface (GUID_DEVINTERFACE_COMPORT) is the recommended way to discover and access a COM port. Using legacy COM port names is prone to name collisions and doesn't provide state change notifications to a client. Refer to the sample code that illustrates how to access a device using this device interface.
The following samples (on GitHub) register an instance of this class for a serial port:
- The Serial sample
- The Virtual serial driver sample (UMDF 1.0)
- The Virtual serial2 driver sample (KMDF)
GUID_CLASS_COMPORT is an obsolete identifier for this device interface class; for new instances of this class, use GUID_DEVINTERFACE_COMPORT instead.
Requirements
| Version | Available in Microsoft Windows 2000 and later versions of Windows. |
| Header | Ntddser.h (include Ntddser.h) |