$COLOR: Difference between revisions
Jump to navigation
Jump to search
Navigation:
Main Page with Articles and Tutorials
Keyword Reference - Alphabetical
Keyword Reference - By usage
Report a broken link
No edit summary |
No edit summary |
||
Line 11: | Line 11: | ||
* [[$COLOR]]:32 adds [[CONST|constants]] for 32-bit colors, similar to HTML color names. The actual constant names can be found in the file '''source/utilities/color32.bi'''. | * [[$COLOR]]:32 adds [[CONST|constants]] for 32-bit colors, similar to HTML color names. The actual constant names can be found in the file '''source/utilities/color32.bi'''. | ||
* [[$COLOR]] is a shorthand to manually using [[$INCLUDE]] pointing to the files listed above. | * [[$COLOR]] is a shorthand to manually using [[$INCLUDE]] pointing to the files listed above. | ||
* Prior to QBPE v0.5, [[$COLOR]] was not compatible with [[$NOPREFIX]]. | * Prior to QBPE v0.5 ¹), [[$COLOR]] was not compatible with [[$NOPREFIX]]. | ||
* Since QBPE v0.5, [[$COLOR]] can now be used with [[$NOPREFIX]], with a few notable differences to three conflicting colors -- Red, Green, Blue. | * Since QBPE v0.5, [[$COLOR]] can now be used with [[$NOPREFIX]], with a few notable differences to three conflicting colors -- Red, Green, Blue. | ||
Line 17: | Line 17: | ||
: | : | ||
:To prevent these conflicts, the [[COLOR]] values have had '''NP_''' prepended to the front of them, to distinguish them from the non-prefixed command names. All other color names remain the same, with only the three colors in conflict having to use '''NP_''' (for '''N'''o '''P'''refix) in front of them. | :To prevent these conflicts, the [[COLOR]] values have had '''NP_''' prepended to the front of them, to distinguish them from the non-prefixed command names. All other color names remain the same, with only the three colors in conflict having to use '''NP_''' (for '''N'''o '''P'''refix) in front of them. | ||
¹) (QBPE = QB64 Phoenix Edition) | |||
{{PageExamples}} | {{PageExamples}} | ||
Line 28: | Line 30: | ||
{{Text|Bright white on red.|#fcfcfc}} | {{Text|Bright white on red.|#fcfcfc}} | ||
{{OutputEnd}} | {{OutputEnd}} | ||
'''Example 2:''' ''Adding named color constants for 32-bit modes:'' | '''Example 2:''' ''Adding named color constants for 32-bit modes:'' | ||
Line 47: | Line 48: | ||
{{Cl|PRINT}} "Red on White." | {{Cl|PRINT}} "Red on White." | ||
{{CodeEnd}} | {{CodeEnd}} | ||
{{PageSeeAlso}} | {{PageSeeAlso}} |
Revision as of 23:56, 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 ¹), $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_ prepended to the front of them, to distinguish them from the non-prefixed command names. 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.
¹) (QBPE = QB64 Phoenix Edition)
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