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Q143247: FIX: Scrolling Edit Window Causes Incorrect Highlighting

Article: Q143247
Product(s): Microsoft FoxPro
Version(s): WINDOWS:3.0b
Operating System(s): 
Keyword(s): kbvfp kbvfp300bBUG kbvfp500fixkbbuglist kbfixlist
Last Modified: 24-MAR-2000

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The information in this article applies to:

- Microsoft Visual FoxPro for Windows, version 3.0b 
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SYMPTOMS
========

When you use the EDIT command to add or modify data in a table, the field may
highlight incorrectly. This causes data entry problems if the DOWNARROW key is
pressed to go to the next field instead of the ENTER key. This affects numeric,
double, integer and currency fields. All other field types are processed
correctly even though the highlight doesn't seem to cover the entire field.

WORKAROUND
==========

When using the EDIT command, you need to use a :W= and the FIELDS clause to
properly highlight the numeric, double, currency, and integer fields when the
user presses the DOWNARROW key. For example:

     EDIT FIELDS field1, field2 :W = numwhen()

     FUNCTION numwhen
     KEYBOARD '{CTRL+A}'

NOTE: The CTRL+A or select all functionality will only work if the system menu is
active in the application or in Visual FoxPro.

STATUS
======

Microsoft has confirmed this to be a problem in the Microsoft products listed at
the beginning of this article. This problem has been fixed in Visual FoxPro 5.0
for Windows.

MORE INFORMATION
================


In numeric fields, because they are right justified, the numbers aren't selected,
so any numbers entered are appended to the front of existing numbers as long as
the DOWNARROW key is used to move to the next field. The only workaround found
was to use the FIELDS clause, list all fields, use a :W=, and use the following
in the WHEN function to select the entire field.

     KEYBOARD '{CTRL-A}'

The currency field behaves differently from the other fields. If the currency
field has 0.0000 as its value, the problem will not occur. If the currency field
already has data in it, the problem will occur. The additional data is
preappended to the current data. For example, if the current data is 20.0000 and
you want to change it to 30, the new value will be 3020.0000 unless you use :W=
to highlight the entire field.

Also, if the last field in the EDIT window is a currency field and you try to
change that value for the last record in the table, the value will change to
zero - not the value you typed in. To work around this problem, use the FIELDS
list to make sure that the currency field is not the last field in the table or
permanently change the structure of the table.

Steps to Reproduce Problem
--------------------------

1. Issue the following commands in the Command Window:

     USE SAMPLES\DATA\CUSTOMER
     EDIT

2. Make your EDIT window show the first record and only part of the second
  record.

3. Use the arrow keys to move down through each field.

4. Once you start scrolling, you will notice that the highlight is no longer
  highlighting the entire field.

5. Change the amount in the MaxOrdAmt field to something different, and then
  press the DOWNARROW key.

Additional query words: data corruption incorrect

======================================================================
Keywords          : kbvfp kbvfp300bBUG kbvfp500fix kbbuglist kbfixlist
Technology        : kbVFPsearch kbAudDeveloper kbVFP300b
Version           : WINDOWS:3.0b
Issue type        : kbbug
Solution Type     : kbfix

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