Enumerating CD Devices on Your System

This short code sample shows how to determine all the CDRom drives you have connected to your computer using the WinAPI.

Although this can now be done with the new FileSystemObject that comes with VB6 (and as an extra with VB5), this is how to get the drives through code when the target machine may not have the SSCRUN.DLL.


Screen-Shot

The code is quite simple and uses the GetDriveType and GetLogicalDriveStrings Windows API calls.


'
private Declare Function GetDriveType Lib "kernel32" _
        Alias "GetDriveTypeA" (byval nDrive as string) as Long
private Declare Function GetLogicalDriveStrings Lib "kernel32" _
        Alias "GetLogicalDriveStringsA" (byval nBufferLength as Long, _
        byval lpBuffer as string) as Long
private Const DRIVE_CDROM = 5
'
private Sub ListCDROMs()
    Dim sDrives as string
    Dim sDrive as string

    sDrives = Space(255)
    sDrives = Left$(sDrives, GetLogicalDriveStrings(255, byval sDrives))
    While InStr(sDrives, "\")
        sDrive = Left$(sDrives, InStr(sDrives, "\"))
        If GetDriveType(sDrive) = DRIVE_CDROM then
            List1.AddItem "(CDRom) " & sDrive
        End If
        sDrives = mid$(sDrives, len(sDrive) + 2)
    Wend
End Sub
'

Download Zipped Project File (3k)



Comments

  • More helpful for me

    Posted by Legacy on 07/25/2003 12:00am

    Originally posted by: Mohan

    Thanks lot to provide code. Your e-help is much appreciated.
    

    Reply
Leave a Comment
  • Your email address will not be published. All fields are required.

Top White Papers and Webcasts

  • Java developers know that testing code changes can be a huge pain, and waiting for an application to redeploy after a code fix can take an eternity. Wouldn't it be great if you could see your code changes immediately, fine-tune, debug, explore and deploy code without waiting for ages? In this white paper, find out how that's possible with a Java plugin that drastically changes the way you develop, test and run Java applications. Discover the advantages of this plugin, and the changes you can expect to see …

  • Live Event Date: August 19, 2014 @ 11:00 a.m. ET / 8:00 a.m. PT You deployed your app with the Bluemix PaaS and it's gaining some serious traction, so it's time to make some tweaks. Did you design your application in a way that it can scale in the cloud? Were you even thinking about the cloud when you built the app? If not, chances are your app is going to break. Check out this upcoming webcast to learn various techniques for designing applications that will scale successfully in Bluemix, for the …

Most Popular Programming Stories

More for Developers

Latest Developer Headlines

RSS Feeds