ID Number: Q80965
1.00
MS-DOS
buglist1.00
Summary:
One item in a list box can contain up to 1K of text when you use the
AddItem method. By assigning the text directly to the List property,
you can incorrectly assign more the 1K of text to a list box item. The
1K limitation was implemented with AddItem to overcome a Windows 3.0
problem related to list boxes. The 1K list box item text limitation
should also apply when assigning text directly to an item of a list
box.
Microsoft has confirmed this to be a problem with Microsoft Visual
Basic programming system version 1.0 for Windows. We are researching
this problem and will post new information here as it becomes
available.
More Information:
The following examples show the difference between using the AddItem
method and assigning the text directly to a list box item.
1. Run Visual Basic, or from the File menu, choose New Project (ALT,
F, N) if Visual Basic is already running. Form1 is created by
default.
2. Place two list box controls (List1 and List2) on Form1.
3. Double-click on Form1 to open the Code window, and add the
following code:
Sub Form_Click ()
List1.List(0) = String$(4096, "A") 'Direct assignment
a$ = List1.List(0)
Print Len(a$) 'Will print 4096
List2.AddItem String$(4096, "A") 'Using the AddItem method
a$ = List2.List(0)
Print Len(a$) 'Will print 1024
End Sub
4. From the Run menu, choose Start (ALT, R, S) to run the program.
While the program is running, click on Form1. The values 4096 and 1024
will be printed on the form. These values represent the result of
attempting to add 4K of text to a list box item. Assigning the text
directly to the first item (item 0) of List1 incorrectly allows 4K of
text to be assigned to the list box item. Using the AddItem method in
an attempt to assign 4K of text to the first item of List2 correctly
allows only 1K of text to be assigned to the list box.
Additional reference words: 1.00