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  • Your email address will not be published.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

  • On-demand Event Event Date: September 10, 2014 Modern mobile applications connect systems-of-engagement (mobile apps) with systems-of-record (traditional IT) to deliver new and innovative business value. But the lifecycle for development of mobile apps is also new and different. Emerging trends in mobile development call for faster delivery of incremental features, coupled with feedback from the users of the app "in the wild." This loop of continuous delivery and continuous feedback is how the best mobile …

  • A modern mobile IT strategy is no longer an option, it is an absolute business necessity. Today's most productive employees are not tied to a desk, an office, or a location. They are mobile. And your company's IT strategy has to be ready to support them with easy, reliable, 24/7 access to the business information they need, from anywhere in the world, across a broad range of communication devices. Here's how some of the nation's most progressive corporations are meeting the many needs of their mobile workers …

Most Popular Programming Stories

More for Developers

Latest Developer Headlines

RSS Feeds