CONTROLCHR: Difference between revisions
Jump to navigation
Jump to search
Navigation:
Main Page with Articles and Tutorials
Keyword Reference - Alphabetical
Keyword Reference - By usage
Report a broken link
No edit summary |
No edit summary |
||
| Line 9: | Line 9: | ||
{{PageDescription}} | {{PageDescription}} | ||
* The [[OFF]] clause allows control characters 0 to 31 to be printed and not format printing as normal text characters. | * The [[OFF]] clause allows control characters 0 to 31 to be printed and not format printing as normal text characters. | ||
::For example: '''{{ | ::For example: '''{{Text|PRINT CHR$(13)|green}}''' 'will not move the cursor to the next line and '''{{Text|PRINT CHR$(9)|green}}''' 'will not tab. | ||
* The default [[ON]] statement allows [[ASCII#Control_Characters|Control Characters]] to be used as control commands where some will not print or will format prints. | * The default [[ON]] statement allows [[ASCII#Control_Characters|Control Characters]] 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. | * '''Note:''' File prints may be affected also when using Carriage Return or Line Feed/Form Feed formatting. | ||
| Line 43: | Line 43: | ||
* [[CHR$]], [[ASC]] | * [[CHR$]], [[ASC]] | ||
* [[INKEY$]], [[_KEYHIT]] | * [[INKEY$]], [[_KEYHIT]] | ||
* [[ASCII]] {{ | * [[ASCII]] {{Text|(codes)}} | ||
* [[ASCII#Control_Characters|Control Characters]] | * [[ASCII#Control_Characters|Control Characters]] | ||
{{PageNavigation}} | {{PageNavigation}} | ||
Revision as of 22:19, 11 February 2023
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 Control Characters 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.
Examples
Example: 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