Well if it is part of the Octave install, then using the commands:
graphics_toolkit fltk
flex2d
Still does not generate any menus, just the empty figure canvas window.
I checked in the Octave structure to locate the files and got these points:
C:\Octave\Octave3.6.4_gcc4.6.2\share\octave\3.6.4\m\plot\graphics_toolkit.m
C:\Octave\Octave3.6.4_gcc4.6.2\share\octave\3.6.4\m\plot\private\ <------------location of files with FLTK association
It does not look like calling the graphics_toolkit is doing anything, or not on my install (Windows 7)
Should I get the menus as Ben showed?
Lester