QSerialPortInfo::availablePorts() does not return "Virtual Serial Ports Emulator" com ports on windows

On Windows, QSerialPortInfo::availablePorts() does not returns the com ports created by "Virtual Serial Ports Emulator" (http://www.eterlogic.com/Products.VSPE.html). These com ports are not shown in the device manager, but they are listed in the registry HKEY_LOCAL_MACHINE\HARDWARE\DEVICEMAP\SERIALCOMM and can be opened, written, read and close, without problem.