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Verification of empty CD drive
Message
 
À
22/08/2005 14:14:32
Information générale
Forum:
Visual FoxPro
Catégorie:
Codage, syntaxe et commandes
Versions des environnements
Visual FoxPro:
VFP 8 SP1
Divers
Thread ID:
01042710
Message ID:
01042714
Vues:
19
>Hi,
>
>I was wondering if anyone has a simple way of verifying if a CD or DVD drive has media in it. I have code that figures out what drive letters are the CD and/or DVD drives. Next I want to see what is on the media of these drives. If it is empty I want to skip over it. But I can't figure out how to tell if the drive is empty or not other than using 'SET DEFAULT TO d:\' and getting an "invalid path of file name" error if the drive is empty. Any ideas? Thanks!
>
>Tim

One easy way is using Diskspace function

if Diskspace(lcDriveLetter) = -1 && No CD inserted

Noting the following warning:

"The return value of DISKSPACE( ) might not be accurate for large network drives on some networks. Additionally, DISKSPACE( ) may return -1 for certain long named directories on Windows 98."
"The five senses obstruct or deform the apprehension of reality."
Jorge L. Borges?

"Premature optimization is the root of all evil in programming."
Donald Knuth, repeating C. A. R. Hoare

"To die for a religion is easier than to live it absolutely"
Jorge L. Borges
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