vb和webbrowser通信的例子，点webbrowser里的关闭就会关闭窗体

【实例截图】

【核心代码】

VERSION 5.00
Object = "{EAB22AC0-30C1-11CF-A7EB-0000C05BAE0B}#1.1#0"; "ieframe.dll"
Begin VB.Form Form1 
   Caption         =   "Form1"
   ClientHeight    =   5640
   ClientLeft      =   60
   ClientTop       =   345
   ClientWidth     =   7485
   LinkTopic       =   "Form1"
   ScaleHeight     =   5640
   ScaleWidth      =   7485
   StartUpPosition =   3  '窗口缺省
   Begin SHDocVwCtl.WebBrowser wbMain 
      Height          =   3375
      Left            =   1680
      TabIndex        =   0
      Top             =   840
      Width           =   4335
      ExtentX         =   7646
      ExtentY         =   5953
      ViewMode        =   0
      Offline         =   0
      Silent          =   0
      RegisterAsBrowser=   0
      RegisterAsDropTarget=   1
      AutoArrange     =   0   'False
      NoClientEdge    =   0   'False
      AlignLeft       =   0   'False
      NoWebView       =   0   'False
      HideFileNames   =   0   'False
      SingleClick     =   0   'False
      SingleSelection =   0   'False
      NoFolders       =   0   'False
      Transparent     =   0   'False
      ViewID          =   "{0057D0E0-3573-11CF-AE69-08002B2E1262}"
      Location        =   ""
   End
End
Attribute VB_Name = "Form1"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
'wbMain为WebBrowser的名称
  Option Explicit
  Private WithEvents Doc As MSHTML.HTMLDocument     '   this   will   b   used   to   trap   the   document   events
Attribute Doc.VB_VarHelpID = -1
  Private Sub wbMain_NavigateComplete2(ByVal pDisp As Object, URL As Variant)
                  Set Doc = wbMain.Document           '   assign   the   reference   to   the   doc   object   so   that
  End Sub
  Private Sub Form_Load()
          wbMain.Navigate App.Path & "\1.Htm"         '可以是Internet上的地址
          'wbMain.Navigate "http://www.baidu.com/"
  End Sub
    
  Private Sub Form_Resize()
          wbMain.Move 0, 0, Me.ScaleWidth, Me.ScaleHeight
  End Sub
    
  Private Function Doc_onclick() As Boolean
                  If Doc.activeElement Is Nothing Then
                        Exit Function
                  Else
                          If Doc.activeElement.Id <> "" Then
                                Select Case Doc.activeElement.Id
                                              Case "btnClose"         '网页上有个按钮   ,ID为btnClose
                                                        Unload Me
                                End Select
                          End If
                  End If
                  Doc_onclick = True
  End Function