Other FLTK widget opcodes are FLbox, FLbutBank, FLbutton, FLprintk, FLprintk2, FLprintk2, FLslidBnk and FLvalue.
The following opcodes modify FLTK widget appearance:
FLcolor
FLcolor2
FLhide
FLlabel
FLsetAlign
FLsetBox
FLsetColor
FLsetColor2
FLsetFont
FLsetPosition
FLsetSize
FLsetText
FLsetTextColor
FLsetTextSize
FLsetTextType
FLsetVal_i
FLsetVal
FLshow
The general FLTK widget-related opcodes are FLgetsnap, FLloadsnap, FLrun, FLsavesnap, FLsetsnap, and FLupdate.