SYNOPSIS
img = gcx:load([filename)
DESCRIPTION
Loads the image from filename and returns a graphics context containing the bitmap.
If the file contains an animation, all frames are loaded and are ready to play.
RETURN VALUE
A graphics context handle.
ERRORS
Raises an error if gcx is not a graphics context.
EXAMPLE
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fb = gfx.open()
img = fb:load("/media/mmc0a/320x240/bird.png")
img:blit(0,0)