Q31484: In 4.00b, PEN(0) Returns Zero in QB.EXE or Compiled BC /V
Article: Q31484 Product(s): See article Version(s): 4.00b 4.50 Operating System(s): MS-DOS Keyword(s): ENDUSER | buglist4.00b fixlist4.50 B_BasicCom | mspl13_basic Last Modified: 24-MAR-1989 PEN(0) always returns a value of zero when used within the QuickBASIC Version 4.00b editor or in a program that was compiled with the BC /V option. This problem occurs in QuickBASIC Version 4.00b and in the Microsoft BASIC Compiler Versions 6.00 and 6.00b for MS-DOS and OS/2 (buglist6.00, buglist6.00b). A workaround is to compile the program with BC.EXE without the /V option. This problem was corrected by QuickBASIC Version 4.50. Results of testing with earlier versions show that the PEN function in QuickBASIC Version 4.00 causes the system to hang (query on PEN for a related article within this database). PEN(0) works properly in QuickBASIC Versions 3.00, 2.01, and 2.00. The following is a code example: CLS PEN ON WHILE INKEY$ = "" FOR i% = 1 TO 10000 NEXT i% 'Delay loop for readability PRINT PEN(0) WEND
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