XL97: Error When You Change List Property of Combo Box

• Microsoft Excel 97 for Windows

SYMPTOMS

When you click a combo box in a UserForm in Microsoft Excel 97, you may receive the following error message:

   Run-time error '28':
   Out of stack space

   This program has performed an illegal operation and will be shut down.
   If the problem persists, contact the program vendor.

   EXCEL caused an invalid page fault in module FM20.DLL at
   0137:60025b9e.

   EXCEL caused an invalid page fault in module KERNEL32.DLL at
   0137:bff85808.

CAUSE

This problem may occur if the following conditions are true:

• A Visual Basic subroutine is assigned to the DropButtonClick event of the combo box.

  -and-

• The DropButtonClick subroutine uses the List property to reset the list assigned to the combo box.

RESOLUTION

To prevent this problem from occurring, do not change the List property for a combo box in the subroutine assigned to the DropButtonClick event of the combo box.

STATUS

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

MORE INFORMATION

When you add a control to a UserForm in Microsoft Excel 97, you can assign a subroutine to each event to which the control responds: for example, Click, Change, DblClick, and so on. To do this, follow these steps:

1. In the UserForm, double-click the control.

2. In the Procedure list box, select the event to which you want to assign a subroutine.

   Private Sub ComboBox1_DropButtonClick()
       '<code goes here>
   End Sub

   Private Sub ComboBox1_DropButtonClick()
       Dim ListArray(0 To 3) As String
       ListArray(0) = Now
       ListArray(1) = Now + 0.25
       ListArray(2) = Now + 0.5
       ListArray(3) = Now + 1
       ComboBox1.List = ListArray
   End Sub