KnowledgeBase Archive

An Archive of Early Microsoft KnowledgeBase Articles

View on GitHub

Q44492: Mandelbrot Example Needs to Change "LogicY" to a SINGLE

Article: Q44492
Product(s): See article
Version(s): 4.00 4.00b 4.50
Operating System(s): MS-DOS
Keyword(s): ENDUSER | B_BasicCom docerr | mspl13_basic
Last Modified: 20-DEC-1989

The MANDEL.BAS program example on Pages 213-217 of the "Microsoft
QuickBASIC 4.5: Programming in BASIC" manual for Version 4.50, on
Pages 263-267 of the "Microsoft QuickBASIC 4.0: Programming in BASIC:
Selected Topics" manual for Versions 4.00 and 4.00b, and on Pages
211-215 of the "Microsoft BASIC 7.0: Programmer's Guide" for Microsoft
BASIC PDS Version 7.00 does not work correctly for all WINDOW
coordinates, unless the variable "LogicY" is changed to a SINGLE or
DOUBLE precision variable.

To correct the problem, change all occurrences of LogicY to LogicY! or
add the following line to the beginning of the program:

   DIM LogicY AS SINGLE

This information applies to QuickBASIC Versions 4.00, 4.00b, and 4.50
for MS-DOS, to Microsoft BASIC Compiler Versions 6.00 and 6.00b for
MS-DOS and MS OS/2, and to Microsoft BASIC PDS Version 7.00 for MS-DOS
and MS OS/2.

For more information, query on the following words in this
Knowledge Base:

   PMAP and MAP and WINDOW and INTEGER

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.