---Sherlock, Ric wrote > but I have put the following together which if I'm lucky > might be a step > in the right direction? Redefining the following verbs will clean up globals.
NB. dat=:256 #. [: |."1 [: [ 256 256 256 #: [: readbmp jpath study_P0_button=: 3 : 0 imgfn=. '~system\examples\data\toucan.bmp' study_g_paint imgfn wd 'setfocus P0;' ) study_P1_button=: 3 : 0 imgfn=. '~system\examples\data\jbox.bmp' study_g_paint imgfn wd 'setfocus P1;' ) study_g_paint=: 3 : 0 glclear '' dat=. 256 #. |."1 [ 256 256 256 #: readbmp jpath y glpixels_jgl2_ (0 33,|.$dat),,dat glpaint_jgl2_ '' ) ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
