Who knows the command to open and close cd/dvd driver?

[Welber Gaya]

I was trying link Trigger with Door Control program but failed.

[tuicemen]

@welber-gaya I found this: https://stackoverflow.com/questions/19467792/batch-command-line-to-eject-cd-tray/28422571#28422571

You ca also try C:>eject H: from cmd to open and C:>eject H: /1 to close. Where H is your DVD drive.

[Xander]

Nircmd from nirsoft.net has a TON of useful little commands built into it.

cdrom open
cdrom close
cdrom open J:
cdrom close R:

http://www.nirsoft.net/utils/nircmd.html