Microsoft KB Archive/44492

= Mandelbrot Example Needs to Change &quot;LogicY&quot; to a SINGLE =

Article ID: 44492

Article Last Modified on 8/16/2005

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APPLIES TO


 * Microsoft QuickBasic 4.0
 * Microsoft QuickBASIC 4.0b
 * Microsoft QuickBasic 4.5 for MS-DOS
 * Microsoft BASIC Compiler 6.0
 * Microsoft BASIC Compiler 6.0b
 * Microsoft BASIC Professional Development System 7.0

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This article was previously published under Q44492



SUMMARY
The MANDEL.BAS program example on Pages 213-217 of the &quot;Microsoft QuickBasic 4.5: Programming in Basic&quot; manual for Version 4.50, on Pages 263-267 of the &quot;Microsoft QuickBasic 4.0: Programming in Basic: Selected Topics&quot; manual for Versions 4.00 and 4.00b, and on Pages 211-215 of the &quot;Microsoft Basic 7.0: Programmer's Guide&quot; for Microsoft Basic PDS Version 7.00 does not work correctly for all WINDOW coordinates, unless the variable &quot;LogicY&quot; 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

Additional query words: QuickBas BasicCom

Keywords: KB44492

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