哈哈 哥们 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() If Command1.Caption = "打开" Then Command1.Caption = "关闭" retvalue = mciSendString("set CDAudio door open", returnstring, 127, 0) Else retvalue = mciSendString("set CDAudio door closed", returnstring, 127, 0) Command1.Caption = "打开" End If End Sub
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()
If Command1.Caption = "打开" Then
Command1.Caption = "关闭"
retvalue = mciSendString("set CDAudio door open", returnstring, 127, 0)
Else
retvalue = mciSendString("set CDAudio door closed", returnstring, 127, 0)
Command1.Caption = "打开"
End If
End Sub