Declare Function GetDriveType Lib "kernel32" Alias "GetDriveTypeA" (ByVal nDrive As String) As Long
该函数返回系统驱动器类型,返回值为5即为光驱,下面这个例子仅作简单的演示,你可以做进一步的改进以用在您自己的应用程序当中
Private Sub GetCDRomLetter()
Dim DriveNum As Integer Dim DriveType Dim CDRom As Integer Dim DriveLetter As String Dim i As Byte DriveNum = 1 Do DriveNum = DriveNum + 1 DriveLetter = Chr(DriveNum + 65) + ":/" DriveType = GetDriveType(DriveLetter) If DriveType = DRIVE_CDROM Then Debug.Print DriveLetter'DRIVE_CDROM=5 Loop Until DriveType = 1'返回值为1,已无可用驱动器
End Sub  
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