# EventHandler

from pandac.PandaModules import EventHandler

Class : EventHandler
Description : A class to monitor events from the C++ side of things. It maintains a set of "hooks", function pointers assigned to event names, and calls the appropriate hooks when the matching event is detected.
This class is not necessary when the hooks are detected and processed entirely by the scripting language, e.g. via Scheme hooks or the messenger in Python.

## Inheritance:

EventHandler: TypedObject
TypedObject: MemoryBase
MemoryBase:

## Methods of EventHandler:

dispatchEvent
getClassType
getGlobalEventHandler
processEvents
write

## Methods of TypedObject:

getClassType
getType
getTypeIndex
isExactType
isOfType

dispatchEvent virtual void EventHandler::dispatch_event(Event const *); Description: Calls the hooks assigned to the indicated single event.

getClassType static TypeHandle EventHandler::get_class_type(void); Undocumented function.

getGlobalEventHandler static EventHandler *EventHandler::get_global_event_handler(EventQueue *queue = ((void *)(0))); Filename: eventHandler.I Created by: skyler (27Jan04) PANDA 3D SOFTWARE Copyright (c) 2001 - 2004, Disney Enterprises, Inc. All rights reserved All use of this software is subject to the terms of the Panda 3d Software license. You should have received a copy of this license along with this source code; you will also find a current copy of the license at http://etc.cmu.edu/panda3d/docs/license/ . To contact the maintainers of this program write to panda3d-general@lists.sourceforge.net . Description: Returns a pointer to the one global EventHandler object. If the global object has not yet been created, this will create it.

processEvents void EventHandler::process_events(void); Description: The main processing loop of the EventHandler. This function must be called periodically to service events. Walks through each pending event and calls its assigned hooks.

write void EventHandler::write(ostream &out) const; Description:

getClassType static TypeHandle TypedObject::get_class_type(void); Undocumented function.

getType virtual TypeHandle TypedObject::get_type(void) const = 0; Derived classes should override this function to return get_class_type().

getTypeIndex int TypedObject::get_type_index(void) const; Description: Returns the internal index number associated with this object's TypeHandle, a unique number for each different type. This is equivalent to get_type().get_index().

isExactType bool TypedObject::is_exact_type(TypeHandle handle) const; Description: Returns true if the current object is the indicated type exactly.

isOfType bool TypedObject::is_of_type(TypeHandle handle) const; Description: Returns true if the current object is or derives from the indicated type.