Detecting CD drive..

Hi,

I'm creating an application that will need to browse a CD-Rom in the CD drive to get certain files.

My question is, how do you detect the user's CD drive letter? Also, what if the user has moer than 1 cd drive, such as a cd and a cd-writer? How would I know which one to browse?

Any help and example code would be appreciated..

Dan

Quote:

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I'm creating an application that will need to browse a CD-Rom in the CD drive to get certain files.

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The common dialog control will work with that, wouldn't it?

Use the GetDriveType API.

VB Code:

Private Declare Function GetDriveType Lib "kernel32" Alias "GetDriveTypeA" (ByVal nDrive As String) As Long
Const DRIVE_CDROM = 5
 
'Returns an array with all the CD Drive's
Function GetCDDrives() As Variant
    Dim vDrives() As Variant
    Dim iCount As String
    iCount = 0
    
    For I = Asc("A") To Asc("Z")
        If GetDriveType(Chr$(I) & ":") = DRIVE_CDROM Then
            ReDim vDrives(iCount)
            vDrives(iCount) = Chr$(I)
        End If
    Next I
    GetCDDrives = vDrives
End Function

Usage:

VB Code:

v = GetCDDrives
 
For I = LBound(v) To UBound(v)
    Print v(I)
Next I

got your answer:


Private Declare Function GetDriveType Lib "kernel32" Alias _
"GetDriveTypeA" (ByVal nDrive As String) As Long
Private Const DRIVE_CDROM = 5

Public Function GetCDROMDriveLetter() As String
Dim DriveChar As Byte
'Dim tmpDrive As String

GetCDROMDriveLetter = "Unknown"

On Error GoTo ErrorHandler

For DriveChar = 0 To 25
tmpDrive = Chr(65 + DriveChar) & ":\"
If (GetDriveType(tmpDrive) = DRIVE_CDROM) Then
GetCDROMDriveLetter = tmpDrive
varDrive = tmpDrive
Exit For
End If
Next DriveChar

'varDrive = tmpDrive
ErrorHandler:
Exit Function

End Function