#include <itkEventObject.h>
Abstraction of the Events used to communicating among filters and with GUIs.
EventObject provides a standard coding for sending and receiving messages indicating things like the initiation of processes, end of processes, modification of filters.
EventObjects form a hierarchy similar to the itk::ExceptionObject allowing to factorize common events in a tree-like structure. Higher detail can be assigned by users by subclassing existing itk::EventObjects.
EventObjects are used by itk::Command and itk::Object for implementing the Observer/Subject design pattern. Observers register their interest in particular kinds of events produced by a specific itk::Object. This mechanism decouples classes among them.
As opposed to itk::Exception, itk::EventObject does not represent error states, but simply flow of information allowing to trigger actions as a consequence of changes occurring in state on some itk::Objects.
itk::EventObject carries information in its own type, it relies on the appropriate use of the RTTI (Run Time Type Information).
A set of standard EventObjects is defined near the end of itkEventObject.h.
- See also
- itk::Command
-
itk::ExceptionObject
- Examples
- Examples/RegistrationITKv4/BSplineWarping1.cxx, Examples/RegistrationITKv4/BSplineWarping2.cxx, Examples/RegistrationITKv4/DeformableRegistration10.cxx, Examples/RegistrationITKv4/DeformableRegistration12.cxx, Examples/RegistrationITKv4/DeformableRegistration13.cxx, Examples/RegistrationITKv4/DeformableRegistration14.cxx, Examples/RegistrationITKv4/DeformableRegistration15.cxx, Examples/RegistrationITKv4/DeformableRegistration16.cxx, Examples/RegistrationITKv4/DeformableRegistration17.cxx, Examples/RegistrationITKv4/DeformableRegistration2.cxx, Examples/RegistrationITKv4/DeformableRegistration3.cxx, Examples/RegistrationITKv4/DeformableRegistration5.cxx, Examples/RegistrationITKv4/DeformableRegistration6.cxx, Examples/RegistrationITKv4/DeformableRegistration7.cxx, Examples/RegistrationITKv4/DeformableRegistration8.cxx, Examples/RegistrationITKv4/DeformableRegistration9.cxx, Examples/RegistrationITKv4/ImageRegistration1.cxx, Examples/RegistrationITKv4/ImageRegistration10.cxx, Examples/RegistrationITKv4/ImageRegistration11.cxx, Examples/RegistrationITKv4/ImageRegistration12.cxx, Examples/RegistrationITKv4/ImageRegistration13.cxx, Examples/RegistrationITKv4/ImageRegistration14.cxx, Examples/RegistrationITKv4/ImageRegistration15.cxx, Examples/RegistrationITKv4/ImageRegistration16.cxx, Examples/RegistrationITKv4/ImageRegistration17.cxx, Examples/RegistrationITKv4/ImageRegistration18.cxx, Examples/RegistrationITKv4/ImageRegistration19.cxx, Examples/RegistrationITKv4/ImageRegistration2.cxx, Examples/RegistrationITKv4/ImageRegistration20.cxx, Examples/RegistrationITKv4/ImageRegistration3.cxx, Examples/RegistrationITKv4/ImageRegistration4.cxx, Examples/RegistrationITKv4/ImageRegistration5.cxx, Examples/RegistrationITKv4/ImageRegistration6.cxx, Examples/RegistrationITKv4/ImageRegistration7.cxx, Examples/RegistrationITKv4/ImageRegistration8.cxx, Examples/RegistrationITKv4/ImageRegistration9.cxx, Examples/RegistrationITKv4/ImageRegistrationHistogramPlotter.cxx, Examples/RegistrationITKv4/IterativeClosestPoint1.cxx, Examples/RegistrationITKv4/IterativeClosestPoint2.cxx, Examples/RegistrationITKv4/ModelToImageRegistration1.cxx, Examples/RegistrationITKv4/ModelToImageRegistration2.cxx, Examples/RegistrationITKv4/MultiResImageRegistration1.cxx, Examples/RegistrationITKv4/MultiResImageRegistration2.cxx, Examples/RegistrationITKv4/MultiResImageRegistration3.cxx, Examples/RegistrationITKv4/MultiStageImageRegistration1.cxx, Examples/RegistrationITKv4/MultiStageImageRegistration2.cxx, Examples/Segmentation/GeodesicActiveContourShapePriorLevelSetImageFilter.cxx, SphinxExamples/src/Core/Common/ObserveAnEvent/Code.cxx, SphinxExamples/src/Numerics/Optimizers/ExhaustiveOptimizer/Code.cxx, SphinxExamples/src/Registration/Common/PerformMultiModalityRegistrationWithMutualInformation/Code.cxx, SphinxExamples/src/Registration/Common/WatchRegistration/Code.cxx, and SphinxExamples/src/Registration/Metricsv4/RegisterTwoPointSets/Code.cxx.
Definition at line 58 of file itkEventObject.h.
◆ EventObject() [1/2]
| itk::EventObject::EventObject |
( |
| ) |
|
|
default |
Constructor and copy constructor. Note that these functions will be called when children are instantiated.
◆ EventObject() [2/2]
◆ ~EventObject()
| virtual itk::EventObject::~EventObject |
( |
| ) |
|
|
virtualdefault |
Virtual destructor needed
◆ CheckEvent()
| virtual bool itk::EventObject::CheckEvent |
( |
const EventObject * |
| ) |
const |
|
pure virtual |
Check if given event matches or derives from this event.
◆ GetEventName()
| virtual const char* itk::EventObject::GetEventName |
( |
| ) |
const |
|
pure virtual |
Return the StringName associated with the event.
◆ MakeObject()
| virtual EventObject* itk::EventObject::MakeObject |
( |
| ) |
const |
|
pure virtual |
Create an Event of this type This method work as a Factory for creating events of each particular type.
◆ operator=()
◆ Print()
| virtual void itk::EventObject::Print |
( |
std::ostream & |
os | ) |
const |
|
virtual |
Print Event information. This method can be overridden by specific Event subtypes. The default is to print out the type of the event.
◆ PrintHeader()
| virtual void itk::EventObject::PrintHeader |
( |
std::ostream & |
os, |
|
|
Indent |
indent |
|
) |
| const |
|
protectedvirtual |
◆ PrintSelf()
| virtual void itk::EventObject::PrintSelf |
( |
std::ostream & |
os, |
|
|
Indent |
indent |
|
) |
| const |
|
protectedvirtual |
Methods invoked by Print() to print information about the object including superclasses. Typically not called by the user (use Print() instead) but used in the hierarchical print process to combine the output of several classes.
◆ PrintTrailer()
| virtual void itk::EventObject::PrintTrailer |
( |
std::ostream & |
os, |
|
|
Indent |
indent |
|
) |
| const |
|
protectedvirtual |
The documentation for this class was generated from the following file:
1.8.16