The fields that can be unified in
)unifies T with
)unifies S with the serial number of the last request processed by the server.
)unifies B, a boolean value, with one of
)unifies D with the ProXL Display the event was read from.
)unifies E with the ProXL Window that receives the event.
)unifies W with the ProXL Window that was moved because of its
)unifies X with the new x coordinate of the window, relative to the its parent.
)unifies Y with the new y coordinate of the window, relative to its parent.
)unifies X and Y with the new x and y coordinates of the window, respectively, relative to its parent.