VERSION 5.00
Begin VB.Form Form1 
   Caption         =   "Form1"
   ClientHeight    =   3195
   ClientLeft      =   60
   ClientTop       =   345
   ClientWidth     =   4680
   LinkTopic       =   "Form1"
   ScaleHeight     =   3195
   ScaleWidth      =   4680
   StartUpPosition =   3  'Windows Default
   Begin VB.CommandButton Command2 
      Caption         =   "Command2"
      Height          =   495
      Left            =   2640
      TabIndex        =   1
      Top             =   1920
      Width           =   1095
   End
   Begin VB.CommandButton Command1 
      Caption         =   "Command1"
      Height          =   495
      Left            =   960
      TabIndex        =   0
      Top             =   1920
      Width           =   1095
   End
End
Attribute VB_Name = "Form1"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
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

 





Private Sub Command1_Click()
'以下是打開CD -ROM的過程代碼:

 

retvalue = mciSendString("set CDAudio door open", _
returnstring, 127, 0)

 

End Sub

Private Sub Command2_Click()
'關(guān)閉CD -ROM用以下代碼:

 

retvalue = mciSendString("set CDAudio door closed", returnstring, 127, 0)

End Sub