EZ_SetGlobalEventFilter - register a global event filter
#include <EZ.h>
EZ_SetGlobalEventFilter( EZ_EventFilterfilter, void *data);
An event filter is a procedure of the following prototype:
void(*handler)(XEvent *event, void *data)
EZ_SetGlobalEventFilter registers a global event filter. The filter will
be invoked by the main event dispatcher whenever a new X event arrives. The
filter may be used to alter the event or delete the event (by setting the
event type to a invalid value).
EZ_AddEventHandler(3)