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<td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>qasyncio.h</h1>
<p>This is the verbatim text of the qasyncio.h include file. It is provided only for illustration; the copyright remains with Trolltech.
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/****************************************************************************
** $Id: qt/qasyncio.h 3.3.8 edited Jan 11 14:38 $
**
** Definition of asynchronous I/O classes
**
** Created : 970617
**
** Copyright (C) 1992-2007 Trolltech ASA. All rights reserved.
**
** This file is part of the kernel module of the TQt GUI Toolkit.
**
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** License versions 2.0 or 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Alternatively you may (at your option) use any
** later version of the GNU General Public License if such license has
** been publicly approved by Trolltech ASA (or its successors, if any)
** and the KDE Free TQt Foundation.
**
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** Public Licensing retquirements will be met:
** http://trolltech.com/products/qt/licenses/licensing/opensource/.
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** A PARTICULAR PURPOSE. Trolltech reserves all rights not granted
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**********************************************************************/
#ifndef TQASYNCIO_H
#define TQASYNCIO_H
#ifndef QT_H
#include "qobject.h"
#include "qsignal.h"
#include "qtimer.h"
#endif // QT_H
#ifndef QT_NO_ASYNC_IO
class TQIODevice;
class Q_EXPORT TQAsyncIO {
public:
virtual ~TQAsyncIO();
void connect(TQObject*, const char *member);
protected:
void ready();
private:
TQSignal signal;
};
class Q_EXPORT TQDataSink : public TQAsyncIO {
public:
// Call this to know how much I can take.
virtual int readyToReceive()=0;
virtual void receive(const uchar*, int count)=0;
virtual void eof()=0;
void maybeReady();
};
class Q_EXPORT TQDataSource : public TQAsyncIO {
public:
virtual int readyToSend()=0; // returns -1 when never any more ready
virtual void sendTo(TQDataSink*, int count)=0;
void maybeReady();
virtual bool rewindable() const;
virtual void enableRewind(bool);
virtual void rewind();
};
class Q_EXPORT TQIODeviceSource : public TQDataSource {
const int buf_size;
uchar *buffer;
TQIODevice* iod;
bool rew;
public:
TQIODeviceSource(TQIODevice*, int bufsize=4096);
~TQIODeviceSource();
int readyToSend();
void sendTo(TQDataSink* sink, int n);
bool rewindable() const;
void enableRewind(bool on);
void rewind();
};
class Q_EXPORT TQDataPump : public TQObject {
Q_OBJECT
int interval;
TQTimer timer;
TQDataSource* source;
TQDataSink* sink;
public:
TQDataPump(TQDataSource*, TQDataSink*);
private slots:
void kickStart();
void tryToPump();
};
#endif // QT_NO_ASYNC_IO
#endif
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