Q133243: How to Determine Which Key the User Pressed in a Grid

Article: Q133243
Product(s): Microsoft FoxPro
Version(s): WINDOWS:3.0
Operating System(s): 
Keyword(s): 
Last Modified: 15-FEB-2000

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

- Microsoft Visual FoxPro for Windows, version 3.0 
-------------------------------------------------------------------------------

SUMMARY
=======

This article shows by example how to determine if the user pressed the UP ARROW
key while the pointer was on the first record of the grid or pressed the DOWN
ARROW key while the pointer was on the last record of the grid.

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

Step-by-Step Example
--------------------

1. Open a table, and create a new form.

2. Create a new form property called FirstRecord.

3. Add a grid to the form.

4. In the grid's Init event, add this line of code:

     THISFORM.FirstRecord = RECNO()

5. In the grid's AfterRowColChange event, add this code:

     Do CASE
        CASE LASTKEY() = 5 AND THISFORM.FirstRecord = RECNO()
           =MESSAGEBOX("You're on the first record of the grid")
        CASE LASTKEY() = 24 AND THIS.ActiveRow = RECCOUNT()
           =MESSAGEBOX("You're on the last row of the grid")
        ENDCASE

6. Save and run form.

NOTE: If add complexity, such as filtering the table or changing the index order
of the table after the grid's Init event fires, this example will not work. You
will need to change the example to accommodate the additional complexity.

Additional query words: VFoxWin

======================================================================
Keywords          :  
Technology        : kbVFPsearch kbAudDeveloper kbVFP300
Version           : WINDOWS:3.0

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

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 1986-2002.