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QIODeviceSource Class Reference

The QIODeviceSource class is a QDataSource that draws data from a QIODevice. More...

#include <qasyncio.h>

Inherits QDataSource.

List of all member functions.

Public Members

Detailed Description

This class is obsolete. It is provided to keep old source working. We strongly advise against using it in new code.

The QIODeviceSource class is a QDataSource that draws data from a QIODevice.

This class encapsulates retrieving data from a QIODevice (such as a QFile).

Member Function Documentation

QIODeviceSource::QIODeviceSource ( QIODevice * device, int buffer_size = 4096 )

Constructs a QIODeviceSource from the QIODevice device. The QIODevice must be dynamically allocated, becomes owned by the QIODeviceSource, and will be deleted when the QIODeviceSource is destroyed. buffer_size determines the size of buffering to use between asynchronous operations. The higher the buffer_size, the more efficient, but the less interleaved the operation will be with other processing.

QIODeviceSource::~QIODeviceSource ()

Destroys the QIODeviceSource, deleting the QIODevice from which it was constructed.

void QIODeviceSource::enableRewind ( bool on ) [virtual]

If on is set to TRUE then rewinding is enabled. No special action is taken. If on is set to FALSE then rewinding is disabled.

Reimplemented from QDataSource.

int QIODeviceSource::readyToSend () [virtual]

Ready until end-of-file.

Reimplemented from QDataSource.

void QIODeviceSource::rewind () [virtual]

Calls reset() on the QIODevice.

Reimplemented from QDataSource.

bool QIODeviceSource::rewindable () const [virtual]

All QIODeviceSource's are rewindable.

Reimplemented from QDataSource.

void QIODeviceSource::sendTo ( QDataSink * sink, int n ) [virtual]

Reads a block of data and sends up to n bytes to the sink.

Reimplemented from QDataSource.

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Qt 3.3.8