form1.vb

Visual.Basic.NET实用编程百例-47.6M.zip

Public Class Form1
    Inherits System.Windows.Forms.Form

#Region " Windows 窗体设计器生成的代码 "

    Public Sub New()
        MyBase.New()

        '该调用是 Windows 窗体设计器所必需的。
        InitializeComponent()

        '在 InitializeComponent() 调用之后添加任何初始化

    End Sub

    '窗体重写 dispose 以清理组件列表。
    Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
        If disposing Then
            If Not (components Is Nothing) Then
                components.Dispose()
            End If
        End If
        MyBase.Dispose(disposing)
    End Sub

    'Windows 窗体设计器所必需的
    Private components As System.ComponentModel.IContainer

    '注意: 以下过程是 Windows 窗体设计器所必需的
    '可以使用 Windows 窗体设计器修改此过程。
    '不要使用代码编辑器修改它。
    Friend WithEvents Button1 As System.Windows.Forms.Button
    Friend WithEvents Button2 As System.Windows.Forms.Button
    Friend WithEvents Button3 As System.Windows.Forms.Button
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.Button1 = New System.Windows.Forms.Button
        Me.Button2 = New System.Windows.Forms.Button
        Me.Button3 = New System.Windows.Forms.Button
        Me.SuspendLayout()
        '
        'Button1
        '
        Me.Button1.Location = New System.Drawing.Point(72, 24)
        Me.Button1.Name = "Button1"
        Me.Button1.Size = New System.Drawing.Size(100, 30)
        Me.Button1.TabIndex = 0
        Me.Button1.Text = "打开光驱"
        '
        'Button2
        '
        Me.Button2.Location = New System.Drawing.Point(72, 80)
        Me.Button2.Name = "Button2"
        Me.Button2.Size = New System.Drawing.Size(100, 30)
        Me.Button2.TabIndex = 1
        Me.Button2.Text = "关闭光驱"
        '
        'Button3
        '
        Me.Button3.Location = New System.Drawing.Point(72, 136)
        Me.Button3.Name = "Button3"
        Me.Button3.Size = New System.Drawing.Size(100, 30)
        Me.Button3.TabIndex = 2
        Me.Button3.Text = "退出"
        '
        'Form1
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(6, 14)
        Me.ClientSize = New System.Drawing.Size(248, 181)
        Me.Controls.Add(Me.Button3)
        Me.Controls.Add(Me.Button2)
        Me.Controls.Add(Me.Button1)
        Me.Name = "Form1"
        Me.Text = "打开和关闭光驱"
        Me.ResumeLayout(False)

    End Sub

#End Region
    Dim retvalue As Object
    Dim returnstring As Object
    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load

    End Sub

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        retvalue = mciSendString("set CDAudio door open", returnstring, 127, 0)

    End Sub

    Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
        retvalue = mciSendString("set CDAudio door closed", returnstring, 127, 0)
    End Sub

    Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
        End
    End Sub
End Class