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49 lines
1.4 KiB
Markdown
49 lines
1.4 KiB
Markdown
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The [_CONTROLCHR](_CONTROLCHR) statement can be used to turn OFF control character attributes and allow them to be printed.
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## Syntax
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> [_CONTROLCHR](_CONTROLCHR) {OFF|ON}
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## Description
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* The [OFF](OFF) clause allows control characters 0 to 31 to be printed and not format printing as normal text characters.
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* For example: **PRINT CHR$(13)** 'will not move the cursor to the next line and **PRINT CHR$(9)** 'will not tab.
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* The default [ON](ON) statement allows [ASCII](ASCII) to be used as control commands where some will not print or will format prints.
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* **Note:** File prints may be affected also when using Carriage Return or Line Feed/Form Feed formatting.
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* The QB64 IDE may allow Alt + number pad character entries, but they must be inside of [STRING](STRING) values. Otherwise the IDE may not recognize them.
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## Example(s)
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Printing the 255 [ASCII](ASCII) characters in [SCREEN](SCREEN) 0 with 32 colors.
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```vb
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DIM i AS _UNSIGNED _BYTE
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WIDTH 40, 25
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CLS
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_CONTROLCHR OFF
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i = 0
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DO
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PRINT CHR$(i);
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i = i + 1
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IF (i AND &HF) = 0 THEN PRINT
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LOOP WHILE i
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LOCATE 1, 20
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DO
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COLOR i AND &HF OR (i AND &H80) \ &H8, (i AND &H70) \ &H10
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PRINT CHR$(i);
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i = i + 1
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IF (i AND &HF) = 0 THEN LOCATE 1 + i \ &H10, 20
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LOOP WHILE i
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END
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```
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## See Also
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* [_CONTROLCHR (function)](_CONTROLCHR-(function))
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* [CHR$](CHR$), [ASC](ASC)
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* [INKEY$](INKEY$), [_KEYHIT](_KEYHIT)
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* [ASCII](ASCII) (codes)
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* [ASCII](ASCII)
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