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diff --git a/experimental/tqtinterface/qt4/src/kernel/tqpngio.h b/experimental/tqtinterface/qt4/src/kernel/tqpngio.h
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+/****************************************************************************
+**
+** Definition of PNG TQImage IOHandler
+**
+** Created : 970521
+**
+** Copyright (C) 2010 Timothy Pearson and (C) 1992-2008 Trolltech ASA.
+**
+** This file is part of the kernel module of the TQt GUI Toolkit.
+**
+** This file may be used under the terms of the GNU General
+** Public License versions 2.0 or 3.0 as published by the Free
+** Software Foundation and appearing in the files LICENSE.GPL2
+** and LICENSE.GPL3 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.
+**
+** Please review the following information to ensure GNU General
+** Public Licensing requirements will be met:
+** http://trolltech.com/products/qt/licenses/licensing/opensource/.
+** If you are unsure which license is appropriate for your use, please
+** review the following information:
+** http://trolltech.com/products/qt/licenses/licensing/licensingoverview
+** or contact the sales department at sales@trolltech.com.
+**
+** This file may be used under the terms of the Q Public License as
+** defined by Trolltech ASA and appearing in the file LICENSE.TQPL
+** included in the packaging of this file.  Licensees holding valid TQt
+** Commercial licenses may use this file in accordance with the TQt
+** Commercial License Agreement provided with the Software.
+**
+** This file is provided "AS IS" with NO WARRANTY OF ANY KIND,
+** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE. Trolltech reserves all rights not granted
+** herein.
+**
+**********************************************************************/
+
+#ifndef TQPNGIO_H
+#define TQPNGIO_H
+
+#ifndef TQT_H
+#include "tqimage.h"
+#endif // TQT_H
+
+#ifndef TQT_NO_IMAGEIO_PNG
+
+void qInitPngIO();
+
+class TQIODevice;
+
+#ifndef TQ_PNGEXPORT
+#if !defined(TQT_PLUGIN)
+#define TQ_PNGEXPORT TQ_EXPORT
+#else
+#define TQ_PNGEXPORT
+#endif
+#endif
+
+class TQ_PNGEXPORT TQPNGImageWriter {
+public:
+    TQPNGImageWriter(TQIODevice*);
+    ~TQPNGImageWriter();
+
+    enum DisposalMethod { Unspecified, NoDisposal, RestoreBackground, RestoreImage };
+    void setDisposalMethod(DisposalMethod);
+    void setLooping(int loops=0); // 0 == infinity
+    void setFrameDelay(int msecs);
+    void setGamma(float);
+
+    bool writeImage(const TQImage& img, int x, int y);
+    bool writeImage(const TQImage& img, int quality, int x, int y);
+    bool writeImage(const TQImage& img)
+	{ return writeImage(img, 0, 0); }
+    bool writeImage(const TQImage& img, int quality)
+	{ return writeImage(img, quality, 0, 0); }
+
+    TQIODevice* tqdevice() { return dev; }
+
+private:
+    TQIODevice* dev;
+    int frames_written;
+    DisposalMethod disposal;
+    int looping;
+    int ms_delay;
+    float gamma;
+};
+
+class TQ_PNGEXPORT TQPNGImagePacker : public TQPNGImageWriter {
+public:
+    TQPNGImagePacker(TQIODevice*, int depth, int convflags);
+
+    void setPixelAlignment(int x);
+    bool packImage(const TQImage& img);
+
+private:
+    TQImage previous;
+    int depth;
+    int convflags;
+    int alignx;
+};
+
+#endif // TQT_NO_IMAGEIO_PNG
+
+#endif // TQPNGIO_H