Hmm...for some reasons I can't find it. I know only an old version, so maybe it's not there anymore.
But you can try:
Code:
gfx.loadimg(100,"picturefilename.png") -- load imagefile into framebuffer 100
gfx.x=5 -- set x-position to 5
gfx.y=5 -- set y-position to 5
gfx.blit(100,1,0) -- blit at x and y position in original size and unrotated
gfx.update()
which should blit the image in the framebuffer 100(as set by the loadimg-function).
You can use the longer version of gfx.blit, with which you can also set, which part of the framebuffer 100 you want to blit(src-named-parameters), as well as the exact position, at which to blit the framebuffer 100(dst-named parameters).
I don't know, where to include it, probably after GUI.Init() and before GUI.update()-functions
(I hope, these functions still exist in the current version...)