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* Since QBPE v0.5, [[$COLOR]] can now be used with [[$NOPREFIX]], with a few notable differences to three conflicting colors -- Red, Green, Blue. | * Since QBPE v0.5, [[$COLOR]] can now be used with [[$NOPREFIX]], with a few notable differences to three conflicting colors -- Red, Green, Blue. | ||
Red would conflict with _RED, Green would conflict with _GREEN, | Red would conflict with [[_RED]], Green would conflict with [[_GREEN]], and Blue would conflict with [[_BLUE]], once the underscore was removed from those commands with [[$NOPREFIX]]. | ||
To prevent these conflicts, the COLOR values have had NP_ appended to the front of them, to distinguish them from the non-prefixed commands. All other color names remain the same, with only the three colors in conflict having to use NP_ (for No Prefix) in front of them. | To prevent these conflicts, the [[COLOR[[ values have had '''NP_''' appended to the front of them, to distinguish them from the non-prefixed commands. All other color names remain the same, with only the three colors in conflict having to use '''NP_''' (for No Prefix) in front of them. | ||
{{PageExamples}} | {{PageExamples}} | ||
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{{Cl|COLOR}} BrightWhite, Red | {{Cl|COLOR}} BrightWhite, Red | ||
{{Cl|PRINT}} "Bright white on red." | {{Cl|PRINT}} "Bright white on red." | ||
{{CodeEnd}} | |||
{{OutputStartBG4}} | |||
{{Text|Bright white on red.|#fcfcfc}} | |||
{{OutputEnd}} | |||
Line 33: | Line 36: | ||
{{Cl|COLOR}} CrayolaGold, DarkCyan | {{Cl|COLOR}} CrayolaGold, DarkCyan | ||
{{Cl|PRINT}} "CrayolaGold on DarkCyan." | {{Cl|PRINT}} "CrayolaGold on DarkCyan." | ||
{{CodeEnd}} | |||
''Example | ''Example 3:'' Adding named color constants for 32-bit modes (with $NOPREFIX in effect): | ||
{{CodeStart}} | {{CodeStart}} | ||
{{Cl|SCREEN}} {{Cl|_NEWIMAGE}}(640, 400, 32) | {{Cl|SCREEN}} {{Cl|_NEWIMAGE}}(640, 400, 32) | ||
Line 43: | Line 46: | ||
'This is to distinguish the color from the command with $NOPREFIX. | 'This is to distinguish the color from the command with $NOPREFIX. | ||
{{Cl|PRINT}} "Red on White." | {{Cl|PRINT}} "Red on White." | ||
{{CodeEnd}} | |||
{{PageSeeAlso}} | {{PageSeeAlso}} |
Revision as of 16:48, 28 April 2022
$COLOR is a metacommand that adds named color constants in a program.
Syntax
Description
- $COLOR:0 adds constants for colors 0-15. The actual constant names can be found in the file source/utilities/color0.bi.
- $COLOR:32 adds constants for 32-bit colors, similar to HTML color names. The actual constant names can be found in the file source/utilities/color32.bi.
- $COLOR is a shorthand to manually using $INCLUDE pointing to the files listed above.
- Prior to QBPE v0.5, $COLOR was not compatible with $NOPREFIX.
- Since QBPE v0.5, $COLOR can now be used with $NOPREFIX, with a few notable differences to three conflicting colors -- Red, Green, Blue.
Red would conflict with _RED, Green would conflict with _GREEN, and Blue would conflict with _BLUE, once the underscore was removed from those commands with $NOPREFIX.
To prevent these conflicts, the [[COLOR[[ values have had NP_ appended to the front of them, to distinguish them from the non-prefixed commands. All other color names remain the same, with only the three colors in conflict having to use NP_ (for No Prefix) in front of them.
Examples
Example 1: Adding named color constants for SCREEN 0:
$COLOR:0 COLOR BrightWhite, Red PRINT "Bright white on red." |
Bright white on red.
|
Example 2: Adding named color constants for 32-bit modes:
SCREEN _NEWIMAGE(640, 400, 32) $COLOR:32 COLOR CrayolaGold, DarkCyan PRINT "CrayolaGold on DarkCyan." |
Example 3: Adding named color constants for 32-bit modes (with $NOPREFIX in effect):
SCREEN _NEWIMAGE(640, 400, 32) $COLOR:32 $NOPREFIX COLOR NP_Red, White 'notice the NP_ in front of Red? 'This is to distinguish the color from the command with $NOPREFIX. PRINT "Red on White." |
See also