mirror of
https://github.com/QB64-Phoenix-Edition/QB64pe.git
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6e01fc8dce
Added new _STRCMP and _STRICMP commands for quick string comparisons. Cleaned up QB64 to finish removing the QUI (quick user insert) code and folders. Altered UCASE and LCASE routines to be faster in some situations for us.
42 lines
1.7 KiB
Plaintext
42 lines
1.7 KiB
Plaintext
The '''PALETTE''' statement can swap color settings, set colors to default or set the Red, Green, Blue color palette.
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''RGB'' {{PageSyntax}}
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:::PALETTE [''attribute'', ''Red'' + (''Green'' * 256) + (''Blue'' * 65536)]
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''Swap'' {{PageSyntax}}
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:::PALETTE [''set_attribute'', new_attribute]
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* ''Red'', ''Green'' and ''Blue'' values can be from 0 to 63. Many color shades possible in non-[[DAC]] color attributes.
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* If the Red, Green and Blue color intensity settings are all the same value the color is greyscale.
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* Screens 0, 7 and 9 ([[DAC]]) colors cannot be changed by the RGB syntax statement in QBasic! Can use [[OUT]] to change attribute 1 thru 5 intensity settings.
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* A swap is often used with [[DAC]] color attributes that cannot change RGB settings. Only the RGB color settings are swapped from original ''set_attribute'' to ''new_attribute''. Screens 0 thru 9 support swaps. Screen 10 up to 8 only.
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* PALETTE without any value sets any changed RGB settings back to the Qbasic default color settings including [[DAC]] colors.
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* [[PALETTE USING]] can be used when color intensity values are stored in an [[Arrays|array]].
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''Example:'' Displaying all 64 DAC color hues as backgrounds in SCREEN 9 using a PALETTE swap.
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{{CodeStart}} '' ''
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{{Cl|SCREEN (statement)|SCREEN}} 9 ' background is default black
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{{Cl|LOCATE}} 20, 33: {{Cl|PRINT}} "Press any Key!"
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{{Cl|FOR...NEXT|FOR}} i = 1 {{Cl|TO}} 64
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a$ = {{Cl|INPUT$}}(1) ' wait for a keypress
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{{Cl|PALETTE}} 0, i
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{{Cl|NEXT}} '' ''
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{{CodeEnd}}
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:''Note:'' Other attributes(1 to 15) can be swapped for DAC foreground colors also.
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''See also:''
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* [[PALETTE USING]]
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* [[COLOR]]
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* [[OUT]], [[INP]]
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* [[SCREEN]]
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{{PageNavigation}} |