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

• QIODeviceSource ( QIODevice *, int bufsize=4096 ) 
• ~QIODeviceSource () 
• virtual int readyToSend () 
• virtual void sendTo ( QDataSink * sink, int n ) 
• virtual bool rewindable () const
• virtual void enableRewind ( bool on ) 
• virtual void rewind () 

Detailed Description

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

QIODeviceSource::~QIODeviceSource ()

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

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

Enables rewinding. No special action is taken.

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 and sends a block of data.

Reimplemented from QDataSource.

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