CDトレイを開閉する

'mciSendString＝＞MCIデバイスににコマンド文字列を送る

'＜引数＞
'lpstrCommand:          コマンド文字列 (下を参照)
'lpSectorsPerCluster:   戻り値の文字列
'uReturnLength:         文字列の大きさ
'hwndCallbac:           無視

'＠戻り値＠
' 正常終了0

'------------コマンド文字列-------------------
'CDトレイをオープン   set cdaudio door open
'CDトレイをクローズ   set cdaudio door Closed
'--------------------------------------------

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


Private Sub Command1_Click()
 
 Dim nCommand As String 'コマンド文字列
 Dim Musi As Long
 Dim moji As String * 255
 Dim nLeng As Long
 Dim Ret As Long

'CDトレイをオープンするコマンド文字列
      nCommand = "set cdaudio door open"

      Ret = mciSendString(nCommand, moji, nLeng, Musi)

End Sub

Private Sub Command2_Click()

 Dim nCommand As String 'コマンド文字列
 Dim Musi As Long
 Dim moji As String * 255
 Dim nLeng As Long
 Dim Ret As Long

'CDトレイをクローズするコマンド文字列
      nCommand = "set cdaudio door Closed"

      Ret = mciSendString(nCommand, moji, nLeng, Musi)
      
End Sub