This function allows for hooking into the operation
of getting the current location of the pointer. This
is only useful for such low-level tools as an
event recorder. Applications should never have any
reason to use this facility.
Usage
gdkSetPointerHooks(object, new.hooks)
Arguments
new.hooks
a table of pointers to functions for getting
quantities related to the current pointer position,
or NULL to restore the default table.