gc:setColorRGB

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gc:setColorRGB is a function that is part of the gc (Graphics Context).

It sets the color of subsequent draw and fill operations.


This has been introduced in TI-Nspire OS 3.0 (Changes).


Syntax[edit]

gc:setColorRGB(red, green, blue)

Parameter Type Description
red
number A number from 0 to 255 representing the "amount" of red in the color
green
number A number from 0 to 255 representing the "amount" of green in the color
blue
number A number from 0 to 255 representing the "amount" of blue in the color

NB : You can also use hexadecimal numbers instead of decimal ones for each of the arguments.
For example : gc:setColorRGB(0xFF,0xA5,0x9D) is perfecly valid.

Example[edit]

function on.paint(gc)
   gc:setColorRGB(0,0,0)
   gc:drawString("Hello you",0,0,"top") -- will display that text in black
 
   gc:setColorRGB(255,0,0)
   gc:drawString("Hello you too",20,20,"top") -- will display that text in red
end