When a COM has been opened, how can I get it's device handle from user mode?

NTDEV
1

Hi, All
Can I use CreateFile()?
Any reply would be appreciated!
Thanks all.

*******************************************
本邮件已经过垃圾邮件过滤，如发现垃圾
邮件，请转发至：xxxxx@zte.com.cn
********************************************