FIX: Setting Printer Object Reference to Nothing Causes IPF (257660)

The information in this article applies to:

Microsoft Visual Basic Professional Edition for Windows 6.0
Microsoft Visual Basic Enterprise Edition for Windows 6.0

This article was previously published under Q257660

SYMPTOMS

If you have an array of objects that are of type Printer and you set them to the objects of the Printers collection, an Invalid Page Fault occurs when you set them to nothing.

RESOLUTION

To resolve this problem, install the latest service pack for Visual Studio 6.0.

STATUS

Microsoft has confirmed that this is a bug in the Microsoft products that are listed at the beginning of this article. This bug was corrected in the latest service pack for Visual Studio 6.0.

For additional information about Visual Studio service packs, click the following article numbers to view the articles in the Microsoft Knowledge Base:

194022 INFO: Visual Studio 6.0 Service Packs, What, Where, Why

194295 HOWTO: Tell That a Visual Studio Service Pack Is Installed

To download the latest Visual Studio service pack, visit the following Microsoft Web site:

http://msdn.microsoft.com/vstudio/downloads/updates/

MORE INFORMATION

Steps to Reproduce Behavior

On Microsoft Windows 95 or Microsoft Windows 98, create a new Standard EXE project in Visual Basic. Form1 is created by default.
Place a CommandButton on Form1.

Paste the following code into the code window of Form1:

Private Sub command1_Click()
  Dim i As Long
  Dim objPrinter(200) As Printer
  For i = 0 To 200
      Set objPrinter(i) = Printers(0)
  Next
  For i = 0 To 200
      Set objPrinter(i) = Nothing
      Debug.Print i
  Next
End Sub

Press the F5 key to run the program.
Click on Command1 and note that an Invalid Page Fault occurs.

Modification Type:	Minor	Last Reviewed:	12/12/2005
Keywords:	kbBug kbfix kbprint kbVS600sp4fix kbVS600sp5fix KB257660