Q139110: DOC: Code on Pages 75-76 of Developer’s Guide Causes Error

Article: Q139110
Product(s): Microsoft FoxPro
Version(s): WINDOWS:3.0
Operating System(s): 
Keyword(s): kbdocfix
Last Modified: 11-FEB-2000

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The information in this article applies to:

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

When you use the code example listed on pages 75-76 of the Developer's Guide,
the following error occurs:

  Error with <ObjectName>- Height: Expression evaluated to an illegal
  value

This documentation error has been fixed in Visual FoxPro 5.0 for Windows.

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

The error occurs because 12 is not a valid size for the Height property of the
object when the ScaleMode property is set to 3 (Pixels). The default ScaleMode
property of the form is set to Pixels, and the object is designed to use Foxels,
even though there is a line in the DEFINE CLASS grdProducts AS Grid stating:

     ScaleMode = 0

The ScaleMode property is a property of the form, not the grid.

To use the code example, make these two changes:

1. Move the ScaleMode property into the code for the DEFINE CLASS GridForm AS
  FORM.

2. Place "Height = 12" in the PROCEDURE INIT of the grid.

By the time the grid is to be shown, the form's ScaleMode property will now be
set to 0 (Foxels).


After you make the two changes, the code from the Developer's Guide should look
like this:

     DEFINE CLASS GridForm AS FORM
         ScaleMode = 0
         <other statements>
     ENDDEFINE

     DEFINE CLASS grdProducts AS Grid
      <other statements>

       PROCEDURE INIT
         This.Height = 12
       ENDPROC

     ENDDEFINE

Additional query words: docerr VFoxWin 5.00

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

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