[Bigforth-minos] help gluPickMatrix

[Nick D. <en...@ho...>]

Hi.
I'm trying to add mouse picking to Minos on my WinXP machine.
I activated GLU by adding:
    library libGLU glu32
at line 33 of opengl.fs, then adding:
    libGLU gluPickMatrix df df df df ptr (void/fp) gluPickMatrix ( --  )
at line 569 (with other GLU's).
 
After setting up opengl by including a modified example, with no event-loop, in the xbigforth window, typing the commands:
 
: buff Create cells allot ;
4 buff xywhVP
xywhVP GL_VIEWPORT over glGetIntegerv
3e 3e 3e 3e gluPickMatrix
 
cause immediate closure of the xbigforth window.
Has anyone gotton gluPickMatrix to work on windows?
 
gluNewTess and gluNewQuadric and gluCylinder (which I added for testing) seem OK.