Check if computer have a CDROM?

ALL, In the past there was a standard to have a floppy drive on the computer. Now even CD-ROM is optional. Is there a way to find out if the device is present on the machine? Not mounted, not the disk in - just check for the actual physical device presence on the laptop. If its at all possible with GTK+ - it would be great. Otherwise maybe just with a system command. TIA!! I couldn't find any "cdrom" tags, so just marked it as hardware