Q41040: QuickBASIC WIDTH Command Resets Default Values for PALETTE

Article: Q41040
Product(s): See article
Version(s): 4.00 4.00b 4.50
Operating System(s): MS-DOS
Keyword(s): ENDUSER | buglist4.00 buglist4.00b buglist4.50 SR# S890206-73 | mspl13_basic
Last Modified: 17-FEB-1989

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 problem in Version 4.00, 4.00b,
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 as it becomes available.

The following code will reproduce the problem:

CLS
SCREEN 12
i=0
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$
NEXT

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