Q257853: PRB: Problem When You Call ITC Execute from Form_Load

Article: Q257853
Product(s): Microsoft Visual Basic for Windows
Version(s): 5.0,6.0
Operating System(s): 
Keyword(s): kbhttp kbITC
Last Modified: 17-JUN-2002

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The information in this article applies to:

- Microsoft Visual Basic Professional Edition for Windows, versions 5.0, 6.0 
- Microsoft Visual Basic Enterprise Edition for Windows, versions 5.0, 6.0 
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SYMPTOMS
========

It may be tempting to call the Execute method of Internet Transfer Control in
Form_Load with the intention to send a request automatically. However, the
StateChanged subroutine may not get called if the method is called when the form
is being loaded.

RESOLUTION
==========

To send a request automatically with the Execute method, you can call the method
in Sub Main() and set Sub Main() as the startup object:

1. Add a module to the Visual Basic project.

2. Add Sub Main() to the module.

3. Select Sub Main() as the Startup Object from the project Properties.

4. Remove Sub Form_Load from the form.

5. Call the Execute method in Sub Main() as follows:

  Sub Main()
     Load Form1
     'Form1.Show
     ...
     Form1.Inet1.Execute ...
  End Sub

REFERENCES
==========

For additional information, click the article numbers below to view the articles
in the Microsoft Knowledge Base:

  Q232632 ITC Access Violation with Internet Explorer 5

  Q185519 Vbinet.exe WinInet API Declarations for Visual Basic

  Q193625 WinInet Error Codes (12001 through 12156)

Win32 Internet HTTP Functions in Visual Basic
(http://msdn.microsoft.com/library/techart/msdn_vbhttp.htm)

WinInet APIs Documentation
(http://msdn.microsoft.com/library/default.asp?url=/workshop/networking/wininet/wininet.asp?frame=true)

Additional query words:

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Keywords          : kbhttp kbITC 
Technology        : kbVBSearch kbAudDeveloper kbZNotKeyword6 kbZNotKeyword2 kbVB500Search kbVB600Search kbVB500 kbVB600
Version           : :5.0,6.0
Issue type        : kbprb

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