datastreamformat.html

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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><!-- /home/reggie/tmp/qt-3.0-reggie-5401/qt-x11-commercial-3.0.5/doc/datastreamformat.doc:36 --><html><head><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><title>Format of the QDataStream Operators</title><style type="text/css"><!--h3.fn,span.fn { margin-left: 1cm; text-indent: -1cm; }a:link { color: #004faf; text-decoration: none }a:visited { color: #672967; text-decoration: none }body { background: #ffffff; color: black; }--></style></head><body><table border="0" cellpadding="0" cellspacing="0" width="100%"><tr bgcolor="#E5E5E5"><td valign=center> <a href="index.html"><font color="#004faf">Home</font></a> | <a href="classes.html"><font color="#004faf">All&nbsp;Classes</font></a> | <a href="mainclasses.html"><font color="#004faf">Main&nbsp;Classes</font></a> | <a href="annotated.html"><font color="#004faf">Annotated</font></a> | <a href="groups.html"><font color="#004faf">Grouped&nbsp;Classes</font></a> | <a href="functions.html"><font color="#004faf">Functions</font></a></td><td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>Format of the QDataStream Operators</h1><p> The <a href="qdatastream.html">QDataStream</a> allows you to serialize some of the Qt data types.The table below lists the data types that <a href="qdatastream.html">QDataStream</a> can serializeand how they are represented.<p> <ul><li> Q_INT8<ul><li> signed byte</ul><li> Q_INT16<ul><li> signed 16 bit integer</ul><li> Q_INT32<ul><li> signed 32 bit integer</ul><li> Q_UINT8<ul><li> unsigned byte</ul><li> Q_UINT16<ul><li> unsigned 16 bit integer</ul><li> Q_UINT32<ul><li> unsigned 32 bit integer</ul><li> float<ul><li> 32-bit floating point number using the standard IEEE-754 format</ul><li> double<ul><li> 64-bit floating point number using the standard IEEE-754 format</ul><li> char *<ul><li> The size of the string including the terminating 0 (Q_UINT32)<li> The string bytes including the terminating 0</ul>The null string is represented as <tt>(Q_UINT32) 0</tt>.<li> <a href="qbitarray.html">QBitArray</a><ul><li> The array size (Q_UINT32)<li> The array bits, i.e. (size + 7)/8 bytes</ul><li> <a href="qbrush.html">QBrush</a><ul><li> The brush style (Q_UINT8)<li> The brush color (<a href="qcolor.html">QColor</a>)<li> If style is CustomPattern, the brush pixmap (<a href="qpixmap.html">QPixmap</a>)</ul><li> <a href="qbytearray.html">QByteArray</a><ul><li> The array size (Q_UINT32)<li> The array bytes, i.e. size bytes</ul><li> <a href="qcstring.html">QCString</a><ul><li> The size of the string including the terminating 0 (Q_UINT32)<li> The string bytes including the terminating 0</ul>The null string is represented as <tt>(Q_UINT32) 0</tt>.<li> <a href="qcolor.html">QColor</a><ul><li> RGB value serialized as a Q_UINT32 </ul><li> <a href="qcolorgroup.html">QColorGroup</a><ul><li> foreground (QBrush)<li> button (QBrush)<li> light (QBrush)<li> midLight (QBrush)<li> dark (QBrush)<li> mid (QBrush)<li> text (QBrush)<li> brightText (QBrush)<li> ButtonText (QBrush)<li> base (QBrush)<li> background (QBrush)<li> shadow (QBrush)<li> highlight (QBrush)<li> highlightedText (<a href="qbrush.html">QBrush</a>)</ul><li> <a href="qcursor.html">QCursor</a><ul><li> Shape id (Q_INT16)<li> If shape is BitmapCursor: The bitmap (QPixmap), mask (<a href="qpixmap.html">QPixmap</a>) and hot spot (<a href="qpoint.html">QPoint</a>)</ul><li> <a href="qdate.html">QDate</a><ul><li> Julian day (Q_UINT32)</ul><li> <a href="qdatetime.html">QDateTime</a><ul><li> Date (QDate)<li> Time (<a href="qtime.html">QTime</a>)</ul><li> <a href="qfont.html">QFont</a><ul><li> The point size (Q_INT16)<li> The style hint (Q_UINT8)<li> The char set (Q_UINT8)<li> The weight (Q_UINT8)<li> The font bits (Q_UINT8)</ul><li> <a href="qimage.html">QImage</a><ul><li> Save it as a PNG image.</ul><li> <a href="qmap.html">QMap</a><ul><li> The number of items (Q_UINT32)<li> For all items, the key and value</ul><li> <a href="qpalette.html">QPalette</a><ul><li> active (<a href="qcolorgroup.html">QColorGroup</a>)<li> disabled (QColorGroup)<li> inactive (QColorGroup)</ul><li> <a href="qpen.html">QPen</a><ul><li> The pen styles (Q_UINT8)<li> The pen width (Q_UINT8)<li> The pen color (<a href="qcolor.html">QColor</a>)</ul><li> <a href="qpicture.html">QPicture</a><ul><li> The size of the picture data (Q_UINT32)<li> The raw bytes of picture data (char)</ul><li> <a href="qpixmap.html">QPixmap</a><ul><li> Save it as a PNG image.</ul><li> <a href="qpoint.html">QPoint</a><ul><li> The x coordinate (Q_INT32)<li> The y coordinate (Q_INT32)</ul><li> <a href="qpointarray.html">QPointArray</a><ul><li> The array size (Q_UINT32)<li> The array points (QPoint)</ul><li> <a href="qrect.html">QRect</a><ul><li> left (Q_INT32)<li> top (Q_INT32)<li> right (Q_INT32)<li> bottom (Q_INT32)</ul><li> <a href="qregion.html">QRegion</a><ul><li> The size of the data, i.e. 8 + 16 * (number of rectangles) (Q_UINT32)<li> QRGN_RECTS (Q_INT32)<li> The number of rectangles (Q_UINT32)<li> The rectangles in sequential order (QRect)</ul><li> <a href="qsize.html">QSize</a><ul><li> width (Q_INT32)<li> height (Q_INT32)</ul><li> <a href="qstring.html">QString</a><ul><li> If the string is null: 0xffffffff (Q_UINT32)<li> Otherwise: The string length (Q_UINT32) followed by thedata in UTF-16</ul><li> <a href="qtime.html">QTime</a><ul><li> Milliseconds since midnight (Q_UINT32)</ul><li> <a href="qvaluelist.html">QValueList</a><ul><li> The number of list elements (Q_UINT32)<li> All the elements in sequential order</ul><li> <a href="qvariant.html">QVariant</a><ul><li> The type of the data (Q_UINT32)<li> The data of the specified type</ul><li> <a href="qwmatrix.html">QWMatrix</a><ul><li> m11 (double)<li> m12 (double)<li> m21 (double)<li> m22 (double)<li> dx (double)<li> dy (double)</ul></ul><p> <!-- eof 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