---
name: "qasyncio"
section: "3qt"
platform: "linux"
package: "qt-doc"
version: "3:2.3.1-22"
release: "Debian 3.0 (Woody)"
platforms: ["linux"]
url: "https://new.carta.tech/qasyncio"
---

# qasyncio(3qt)

Encapsulates I/O asynchronicity #include \<qasyncio.h\> Inherited by QDataSink and QDataSource.

## NAME

QAsyncIO - Encapsulates I/O asynchronicity\

`#include <qasyncio.h>`

Inherited by QDataSink and QDataSource.

### Public Members

**virtual ~QAsyncIO ()** \
 **void connect ( QObject \*, const char \* member )** \

### Protected Members

**void ready ()** \

## DESCRIPTION

Encapsulates I/O asynchronicity.

The Qt classes for asynchronous input/output provide a simple mechanism to allow large files or slow data sources to be processed without using large amounts of memory, or blocking the user interface.

This facility is used in Qt to drive animated images. See QImageConsumer.

## MEMBER FUNCTION DOCUMENTATION

## QAsyncIO::~QAsyncIO () `[virtual]`

Destructs the async IO object.

## void QAsyncIO::connect ( QObject \* obj, const char \* member )

Ensures only one object can respond to changes in readiness.

## void QAsyncIO::ready () `[protected]`

Derived classes should call this when they change from being unready to ready.

## SEE ALSO

**http://doc.trolltech.com/qasyncio.html** **http://www.trolltech.com/faq/tech.html**

## COPYRIGHT

Copyright 1992-2001 Trolltech AS, http://www.trolltech.com.  See the license file included in the distribution for a complete license statement.

## AUTHOR

Generated automatically from the source code.

## BUGS

If you find a bug in Qt, please report it as described in **http://doc.trolltech.com/bughowto.html**. Good bug reports make our job much simpler. Thank you.

In case of content or formattting problems with this manual page, please report them to **qt-bugs@trolltech.com**. Please include the name of the manual page (qasyncio.3qt) and the Qt version (2.3.1).