Qt Reference Documentation

QCustomEvent Class Reference

The QCustomEvent class provides support for custom events. More...

 #include <QCustomEvent>

This class is part of the Qt 3 support library. It is provided to keep old source code working. We strongly advise against using it in new code. See Porting to Qt 4 for more information.

Inherits QEvent.

Additional Inherited Members

  • 1 property inherited from QEvent
  • 6 public functions inherited from QEvent
  • 1 static public member inherited from QEvent

Detailed Description

The QCustomEvent class provides support for custom events.

QCustomEvent has a void * that can be used to store custom data.

In Qt 3, QObject::customEvent() took a QCustomEvent pointer. We found out that this approach was unsatisfactory, because there was often no safe way of deleting the data held in the void *.

In Qt 4, QObject::customEvent() takes a plain QEvent pointer. You can add custom data by subclassing.

See also QObject::customEvent() and QCoreApplication::notify().


Thank you for giving your feedback.

Make sure it is related to this specific page. For more general bugs and requests, please use the Qt Bug Tracker.