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QIODeviceSource Class Reference
[obsolete]
The QIODeviceSource class is a QDataSource that draws data from a QIODevice. More...
#include <qasyncio.h>
Inherits QDataSource.
Public Members
- QIODeviceSource ( QIODevice * device, int buffer_size = 4096 )
- 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This class is obsolete.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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