How to open and close CD-ROM drive

How to open and close CD-ROM drive	Applies To
	OS: VB:	NT, 9x, 2000 4, 5, 6

Occasionally, we all want to write a program that will goof on someone. Why not write a program that opens and closes the CD-ROM drive constantly? Here is how:

Add the following to a Form, Module or Class Module


Option Explicit

Private Declare Function mciSendString Lib "winmm.dll" _
    Alias "mciSendStringA" (ByVal lpstrCommand As String, _
    ByVal lpstrReturnString As String, ByVal uReturnLength As Long, _
    ByVal hwndCallback As Long) As Long

Public Sub OpenCdDoor()
    Dim sReturn As String
    Const RETURN_SIZE = 127
    
    mciSendString "set Cdaudio door open", sReturn, RETURN_SIZE, 0
End Sub

Public Sub CloseCdDoor()
    Dim sReturn As String
    Const RETURN_SIZE = 127
    
    mciSendString "set Cdaudio door closed", sReturn, RETURN_SIZE, 0
End Sub

Remarks

Call the two public functions OpenCdDoor and CloseCdDoor whenever you need to accomplish the task.