SET_GREEN

Syntax SET_GREEN #channel, operation
Location Windows (DIY Toolkit - Vol W)

This command allows you to change the colours used within a specified window channel very quickly. In order to use this, you really need a good understanding of the way in which the QL display works - see the QL Display Appendix for some details. The effect that this command has on the specified window depends upon the value of operation:

Operation Effect
0 Clear all Green bits (remove any Green from the screen).
1 Set all Green bits.
-1 If the Red bit for a pixel is set, Set the Green bit, otherwise clear it.

NOTE 1

This command will only work on screen resolutions of 512x256 pixels.

NOTE 2

This command should not really be used in MODE 8.

CROSS-REFERENCE

SET_RED is similar. See RECOL. W_SWAP can also be used to recolour a window. Refer to the QL Display Appendix.