_CONTROLCHR - QB64Official/qb64 GitHub Wiki

The _CONTROLCHR statement can be used to turn OFF control character attributes and allow them to be printed.

Syntax

_CONTROLCHR {OFF|ON}

Description

  • The OFF clause allows control characters 0 to 31 to be printed and not format printing as normal text characters.
    • For example: PRINT CHR$(13) 'will not move the cursor to the next line and PRINT CHR$(9) 'will not tab.
  • The default ON statement allows ASCII to be used as control commands where some will not print or will format prints.
  • Note: File prints may be affected also when using Carriage Return or Line Feed/Form Feed formatting.
  • The QB64 IDE may allow Alt + number pad character entries, but they must be inside of STRING values. Otherwise the IDE may not recognize them.

Example(s)

Printing the 255 ASCII characters in SCREEN 0 with 32 colors.


DIM i AS _UNSIGNED _BYTE
WIDTH 40, 25
CLS
_CONTROLCHR OFF
i = 0
DO
 PRINT CHR$(i);
 i = i + 1
 IF (i AND &HF) = 0 THEN PRINT
LOOP WHILE i
LOCATE 1, 20
DO
 COLOR i AND &HF OR (i AND &H80) \ &H8, (i AND &H70) \ &H10
 PRINT CHR$(i);
 i = i + 1
 IF (i AND &HF) = 0 THEN LOCATE 1 + i \ &H10, 20
LOOP WHILE i
END

See Also