FLcolor2 — A FLTK opcode that sets the secondary (selection) color.
ired -- The red color of the target widget. The range for each RGB component is 0-255
igreen -- The green color of the target widget. The range for each RGB component is 0-255
iblue -- The blue color of the target widget. The range for each RGB component is 0-255
These opcodes modify the appearance of other widgets. There are two types of such opcodes: those that don't contain the ihandle argument which affect all subsequently declared widgets, and those with ihandle which affect only a target widget previously defined.
FLcolor2 is the same of FLcolor except it affects the secondary (selection) color. Setting it to -1 turns off the influence of FLcolor2 on subsequent widgets. A value of -2 (or -3) makes all next widget secondary colors randomly selected. The difference is that -2 selects a light random color, while -3 selects a dark random color.
FLcolor, FLhide, FLlabel, FLsetAlign, FLsetBox, FLsetColor, FLsetColor2, FLsetFont, FLsetPosition, FLsetSize, FLsetText, FLsetTextColor, FLsetTextSize, FLsetTextType, FLsetVal_i, FLsetVal, FLshow