BUG: Error Occurs When Printing a Form Stored in an Array (141680)


The information in this article applies to:

  • Microsoft Visual Basic Standard Edition, 32-bit, for Windows 4.0
  • Microsoft Visual Basic Professional Edition, 16-bit, for Windows 4.0
  • Microsoft Visual Basic Professional Edition, 32-bit, for Windows 4.0
  • Microsoft Visual Basic Enterprise Edition, 16-bit, for Windows 4.0
  • Microsoft Visual Basic Enterprise Edition, 32-bit, for Windows 4.0
This article was previously published under Q141680

SYMPTOMS

An application error occurs when calling the Print method of a form object contained within a form array.

RESOLUTION

To work around this problem, define a non-array form variable and set the variable to reference the form array element that you want to manipulate. Once this variable has been initialized, you can safely call the Print method of the newly defined Form variable, as shown in the example below: 
   Private Sub Form_Load()
   Dim MyForm As Form
     Dim fl(1) As Form2
     Set fl(0) = New Form2
     Set MyForm = fl(0)
     MyForm.Show  'Show the Form2 form
     MyForm.Print 'Print the form to the screen
   End Sub

STATUS

Microsoft has confirmed this to be a bug in the Microsoft products listed at the beginning of this article. Microsoft is researching this problem and will post new information here in the Microsoft Knowledge Base as it becomes available.

MORE INFORMATION

Steps to Reproduce Problem

  1. Start Visual Basic 4.0 or if it is already running, click New Project on the File menu.
  2. Copy the following code to the Code window of the Form1 form:
          Private Sub Form_Load()
         Dim fl(1) As Form2
         Set fl(0) = New Form2
         fl(0).Show  'Show the Form2 form
         fl(0).Print 'Print the form to the screen
      End Sub
  3. On the Insert menu, click Form to insert a second form into the project.
  4. On the Run menu, click start or press the F5 key to start the program. An application error occurs displaying one of the following messages and Visual Basic ends. The error occurs when the form array element's Print method is called.
      32-bit Visual Basic
         Windows NT 3.51-An application error has occurred and an
                         application error log is being generated.
                         VB32.exe. Exception illegal instructions
                         (0xc000001d), Address: (0x001818b3)

         Windows 95/98-VB32 executed an invalid instruction in module
                    <unknown> at 0000:00562eb3.
					
      16-bit Visual Basic under all operating systems
         VB caused a General Protection Fault in module VBA2.DLL at
         0009:87FD.
Modification Type:MajorLast Reviewed:12/9/2003
Keywords:kbBug kbpending KB141680
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