Questions about WindowMaker's Alpha and Shadow

[dr_clow]

I have been following some of the code back form NSWindow to see what it 
ultimately calls. I see that setAlphaValue and setHasShadow: all call back to 
similar methods in x11/XGServerWindow.m . I noticed they were non-functional, 
but the methods there are not simply stubs, they have code in them. The 
setShadow refer to _NET_WM_WINDOW_SHADOW_ATOM , so I assume these were intended 
to work, but a shadow doesn't appear on the window. 

I would love some more context if possible! Thanks!

- Austin