DOCUMENT:Q189601  11-DEC-1999  [foxpro]
TITLE   :PRB: Numeric Values Shift in Grid Column Containing NULL Values
PRODUCT :Microsoft FoxPro
PROD/VER:WINDOWS:5.0,5.0a
OPER/SYS:
KEYWORDS:

======================================================================
-------------------------------------------------------------------------------
The information in this article applies to:

 - Microsoft Visual FoxPro for Windows, versions 5.0, 5.0a 
-------------------------------------------------------------------------------

SYMPTOMS
========

A grid column that has its Sparse property set to .F. is bound to a numeric
field that allows NULL values. When values in that column are edited and the
grid is scrolled, values in that column may shift from left to right and back.

CAUSE
=====

The default column Alignment setting is "3 [ASCII 150] Automatic". The column
does not know whether to format the NULL values as character or numeric.

RESOLUTION
==========

Change the grid column Alignment property to "1 - Middle Right". To demonstrate
this behavior, place the following code in the Init event of the form:

      THIS.GRD1.COLUMN1.ALIGNMENT = 1

STATUS
======

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 Behavior
---------------------------

1. Run the following code from a program (.prg) file:

         PUBLIC OFORM1
         CREA TABLE NULLTEST (F1 N(5,2) NULL)
         FOR LNI = 1 TO 5
            INSERT INTO NULLTEST VALUES (NULL)
         ENDFOR
         USE NULLTEST

         OFORM1=CREATEOBJECT("form1")
         OFORM1.SHOW
         RETURN

         DEFINE CLASS FORM1 AS FORM

            AUTOCENTER = .T.
            HEIGHT = 268
            WIDTH = 378
            CAPTION = "Form1"
            NAME = "Form1"

            PROC INIT
               THIS.GRD1.COLUMN1.TEXT1.NULLDISPLAY = "0"
            ENDPROC

            ADD OBJECT GRD1 AS GRID WITH ;
               COLUMNCOUNT = 1, ;
               LEFT = 33, ;
               RECORDSOURCE = "nulltest", ;
               RECORDSOURCETYPE = 1, ;
               TOP = 28, ;
               NAME = "grd1", ;
               COLUMN1.SPARSE = .F., ;
               COLUMN1.NAME = "Column1"
         ENDDEFINE

2. Type the number 2 in the grid cell in the first row.

3. Press the DOWN ARROW key. The 0 in the second row shifts left.

4. Press the DOWN ARROW key again. The 0 in the second row shifts right.

5. Press the UP ARROW key twice. The 0 in the second row shifts left again.

Additional query words: kbVFp300bbug kbVFp500abug kbVFp600bug

======================================================================
Keywords          :  
Technology        : kbVFPsearch kbAudDeveloper kbVFP500 kbVFP500a
Version           : WINDOWS:5.0,5.0a
Issue type        : kbprb

=============================================================================

THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS
PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND.  MICROSOFT DISCLAIMS
ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES
OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  IN NO
EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR
ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL,
CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF
MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGES.  SOME STATES DO NOT ALLOW THE EXCLUSION
OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES
SO THE FOREGOING LIMITATION MAY NOT APPLY.

Copyright Microsoft Corporation 1999.