Microsoft KB Archive/41040

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QuickBasic WIDTH Command Resets Default Values for PALETTE

Article ID: 41040

Article Last Modified on 11/21/2006

This article was previously published under Q41040


Any switch of WIDTH causes the PALETTE values to be reset to their default values. In the example code below, the circle is always drawn in the color of the default value for PALETTEs 1 to 15. It should always be drawn in the color corresponding to 15948 (63 * 256). This is true of all SCREENs that allow multiple page lengths.


Microsoft has confirmed this to be a bug in Version 4.00, 4.00b, and 4.50 and in Microsoft Basic Compiler Versions 6.00 and 6.00b for MS-DOS and OS/2 (buglist6.00, buglist6.00b). We are researching this problem and will post new information here in the Microsoft Knowledge Base as it becomes available.


The following code will reproduce the problem:

FOR k = 1 TO 15
   PALETTE k, 63 * 256
   i = 30-i
   WIDTH 80, 30 + i
   CIRCLE (100, 100), 80, 5
   PAINT (100, 100), k, 5
   LOCATE 20, 1: PRINT i, k; : INPUT a$

Additional query words: QuickBas buglist4.00 buglist4.00b buglist4.50

Keywords: KB41040