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  • Your email address will not be published.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

  • The explosion in mobile devices and applications has generated a great deal of interest in APIs. Today's businesses are under increased pressure to make it easy to build apps, supply tools to help developers work more quickly, and deploy operational analytics so they can track users, developers, application performance, and more. Apigee Edge provides comprehensive API delivery tools and both operational and business-level analytics in an integrated platform. It is available as on-premise software or through …

  • Wednesday, September 24, 2014 8:00 AM - 9:00 AM PDT According to a recent Forrester Research report, many companies are choosing low-code platforms over traditional programming platforms, due to the speed with which low-code apps can be assembled and tested. With customer-facing applications on the rise, traditional programming platforms simply can't keep up with the "short schedules and rapid change cycles" required to develop these applications. Check out this upcoming webinar and join Clay Richardson from …

Most Popular Programming Stories

More for Developers

Latest Developer Headlines

RSS Feeds