Imports VB = Microsoft.VisualBasic
Friend Class Form1
    Inherits System.Windows.Forms.Form
#Region "Windows 窗體設(shè)計(jì)器生成的代碼"
    Public Sub New()
        MyBase.New()
        '此調(diào)用是 Windows 窗體設(shè)計(jì)器所必需的。
        InitializeComponent()
    End Sub
    '窗體重寫(xiě)處置，以清理組件列表。
    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 窗體設(shè)計(jì)器所必需的
    Private components As System.ComponentModel.IContainer
    Public ToolTip1 As System.Windows.Forms.ToolTip
    '注意: 以下過(guò)程是 Windows 窗體設(shè)計(jì)器所必需的
    '可以使用 Windows 窗體設(shè)計(jì)器來(lái)修改它。
    '不要使用代碼編輯器修改它。
    Public WithEvents Button1 As System.Windows.Forms.Button
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.components = New System.ComponentModel.Container
        Me.ToolTip1 = New System.Windows.Forms.ToolTip(Me.components)
        Me.Button1 = New System.Windows.Forms.Button
        Me.SuspendLayout()
        '
        'Button1
        '
        Me.Button1.BackColor = System.Drawing.SystemColors.Control
        Me.Button1.Cursor = System.Windows.Forms.Cursors.Default
        Me.Button1.ForeColor = System.Drawing.SystemColors.ControlText
        Me.Button1.Location = New System.Drawing.Point(72, 56)
        Me.Button1.Name = "Button1"
        Me.Button1.RightToLeft = System.Windows.Forms.RightToLeft.No
        Me.Button1.Size = New System.Drawing.Size(182, 32)
        Me.Button1.TabIndex = 0
        Me.Button1.Text = "啟動(dòng)"
        '
        'Form1
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(6, 14)
        Me.BackColor = System.Drawing.SystemColors.Control
        Me.ClientSize = New System.Drawing.Size(312, 149)
        Me.Controls.Add(Me.Button1)
        Me.Cursor = System.Windows.Forms.Cursors.Default
        Me.Location = New System.Drawing.Point(4, 23)
        Me.Name = "Form1"
        Me.RightToLeft = System.Windows.Forms.RightToLeft.No
        Me.Text = "啟動(dòng)默認(rèn)的撥號(hào)連接"
        Me.ResumeLayout(False)

    End Sub
#End Region
    Private Sub Button1_Click(ByVal eventSender As System.Object, ByVal eventArgs As System.EventArgs) Handles Button1.Click
        '啟動(dòng)默認(rèn)撥號(hào)連接
        Shell("rundll rnaui.dll,RnaDial " & GetConnect(), AppWinStyle.NormalFocus)
    End Sub

    Public Function GetConnect() As String
        Dim hKey As Integer
        Dim SubKey As String
        hKey = HKEY_CURRENT_USER '主鍵
        SubKey = "RemoteAccess" '子鍵
        '取得默認(rèn)連接名
        GetConnect = GetRegValue(hKey, SubKey, "Default")
    End Function

    Public Function GetRegValue(ByRef hKey As Integer, ByRef lpszSubKey As String, ByRef szKey As String) As Object
        On Error GoTo ErrorRoutineErr
        Dim phkResult As Integer
        Dim lResult As Integer
        Dim szBuffer As String
        Dim lBuffSize As Integer

        '創(chuàng)建緩沖區(qū)
        szBuffer = Space(255)
        lBuffSize = Len(szBuffer)

        '打開(kāi)注冊(cè)鍵
        RegOpenKeyEx(hKey, lpszSubKey, 0, 1, phkResult)

        '查詢結(jié)果
        lResult = RegQueryValueEx(phkResult, szKey, 0, 0, szBuffer, lBuffSize)

        '關(guān)閉注冊(cè)鍵
        RegCloseKey(phkResult)

        '返回結(jié)果
        If lResult = ERROR_SUCCESS Then
            GetRegValue = VB.Left(szBuffer, lBuffSize - 1)
        Else
            GetRegValue = ""
        End If
        Exit Function

ErrorRoutineErr:
        GetRegValue = ""

    End Function

    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load

    End Sub
End Class