How to get x_window_t for a give window ID in libxcb

[Aryeh Friedman]

I am asking this here because I can not think of a better place (if there
is let me know):

Using the code at
http://www.javakb.com/Uwe/Forum.aspx/java-programmer/21292/Getting-X11-window-idas
a model I have made it so I can get the ID of any Java created
window.... I also know how to set event masks and such... what I don't know
is how to tie them together namely I need to find a lib/function that will
give me back the x_window_t for that window and then allow me to modify the
event mask