Background image in toplevel

[Howard Lightstone]

Is there any way to display a photoimage background in a toplevel/frame?

I tried replacing my topmost widget with a canvas but the ripple effects on 
placement and other widgets got too high.

Is there some way to specify a transparent background on a frame?  Then I 
could overlay a (tranparent) canvas window over the photoimage on the basic 
canvas but leave a frame widget (in the window) for position, placement, 
etc.