Detecting changes in connections to removable drives (VFP9)
http://www.news2news.com/vfp/?example=573

In this code sample, ListView control on VFP form displays available disk drives. The list automatically updates itself (VFP9) whenever a connection change occurs:

USB flash drive inserted or ejected

external hard drive connected to USB port, or ejected

network drive mapped or disconnected

CD inserted in CD drive, or ejected

Anatoliy Mogylevets
devicecontext@msn.com
Win32 API Online Reference