form1.frm

来自「150个经典VB API应用实例.全部是运用API写的小程序」· FRM 代码 · 共 54 行

VERSION 5.00
Begin VB.Form Form1 
   Caption         =   "CD-ROM"
   ClientHeight    =   1605
   ClientLeft      =   60
   ClientTop       =   345
   ClientWidth     =   1935
   LinkTopic       =   "Form1"
   ScaleHeight     =   1605
   ScaleWidth      =   1935
   StartUpPosition =   2  '屏幕中心
   Begin VB.CommandButton Command1 
      Caption         =   "CD-ROM"
      DownPicture     =   "Form1.frx":0000
      Height          =   735
      Left            =   360
      Picture         =   "Form1.frx":0442
      Style           =   1  'Graphical
      TabIndex        =   0
      Top             =   360
      Width           =   1215
   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
    'retvalue = mciSendString("set CDAudio door closed" returnstring, 127, 0)
                                               'open       CD开命令
                                               'closed     CD关命令
    
Private Sub Form_Load()
    'If retvalue = mciSendString("set CDAudio door closed", _
                                returnstring, 127, 0) Then
    '   retvalue = mciSendString("set CDAudio door open", _
                                returnstring, 127, 0)
    'End If
    
    'If retvalue = mciSendString("set CDAudio door open", _
                                returnstring, 127, 0) Then
    '   retvalue = mciSendString("set CDAudio door closed", _
                                returnstring, 127, 0)
    'End If
    Unload Me
End Sub