Knowledge Base

FIX: Problems Shutting Down When Using the Inet Control

Article ID: 174836

Article Last Modified on 8/20/2007

APPLIES TO

Microsoft Visual Basic 5.0 Control Creation Edition
Microsoft Visual Basic 5.0 Learning Edition
Microsoft Visual Basic 5.0 Professional Edition
Microsoft Visual Basic 5.0 Enterprise Edition

This article was previously published under Q174836

SYMPTOMS

The IDE and Visual Basic-created .exe files hang when shutting down if they have used the Internet Transfer Control in their project.

STATUS

Microsoft has confirmed this to be a bug in the Microsoft products listed at the beginning of this article. This bug has been fixed in Visual Studio 97 Service Pack 3.

For more information, please see the following article in the Microsoft Knowledge Base:

170365 : INFO: Visual Studio 97 Service Packs - What, Where, and Why

For a list of the Visual Basic 5.0 bugs that were fixed in the Visual Studio 97 Service Pack 3, please see the following article in the Microsoft Knowledge Base:

175450 : INFO: Visual Basic 5.0 Fixes in Visual Studio 97 Service Pack 3

MORE INFORMATION

Steps to Reproduce Behavior

Start a new Standard EXE project. Form1 is created by default. Add the following code:

      Public Sub AddURL(ByVal sURL As String, _
         Optional ByVal sTitle As String = "", _
                 Optional ByVal sSize As String = "", _
                       Optional ByVal lSizeUnit As Long = 0)
         inetDownload.Execute sURL, "GET"
      End Sub

From the Project menu, click Components, and select the Internet Transfer Control 5.0 into the project if it is not already loaded.

Place an Internet Transfer Control 5.0 (Inet1) on Form1 and add the following code:

      Private Sub Inet1_StateChanged(ByVal State As Integer)
          Const lCHUNKSIZE As Long = 1024
          Dim vtData As Variant ' Data variable.

             Select Case State
             ' ... Other cases not shown.
             Case icError ' 11
                 ' In case of error, return ResponseCode and

            ' ResponseInfo.
                 vtData = Inet1.ResponseCode & ":" & _
                 Inet1.ResponseInfo

             Case icResponseCompleted  ' 12
                 Dim strData As String: strData = ""
                 Dim bDone As Boolean: bDone = False

                 ' Get first chunk.
                 vtData = Inet1.GetChunk(lCHUNKSIZE, icString)
                 DoEvents

                 Do While Not bDone

                     strData = strData & vtData
                     ' Get next chunk.
                     vtData = Inet1.GetChunk(lCHUNKSIZE, icString)
                     DoEvents

                     If Len(vtData) = 0 Then
                         bDone = True
                     End If
                 Loop

              Case icDisconnected
                  Debug.Print "* Disconnected"
                  Unload Me

             End Select

      End Sub

Add another form to your project. By default, it will be called Form2. IMPORTANT: Make Form2 your startup form by changing the properties of the project. Add the following code:

      Private Sub Form_Load()
          Load form1
      End Sub

      Private Sub Form_Unload(Cancel As Integer)
          Unload form1
      End Sub

Place a CommandButton (Command1) on Form2 and add the following code:

      Private Sub Command1_Click()
         form1.AddURL "http://www.microsoft.com"
      End Sub

From the Run menu, click Start (ALT, R, S), or press the F5 key to run the program. Click the Command1 button and you will see error described above.

Keywords: kbbug kbfix kbvbp500sp3fix kbvs97sp2fix KB174836

Microsoft KB Archive/174836

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