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< title > Format of the TQDataStream Operators< / title >
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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 > Format of the TQDataStream Operators< / h1 >
< p > The < a href = "tqdatastream.html" > TQDataStream< / a > allows you to serialize some of the TQt data types.
The table below lists the data types that < a href = "tqdatastream.html" > TQDataStream< / a > can serialize
and how they are represented.
< p > It is best to always cast integers to a TQt integer type when writing,
and to read back into the same TQt integer type when reading.
< p > < center > < table cellpadding = "4" cellspacing = "2" border = "0" >
< tr bgcolor = "#f0f0f0" > < td valign = "top" > TQ_INT8
< td valign = "top" > < ul >
< li > signed byte
< / ul >
< tr bgcolor = "#d0d0d0" > < td valign = "top" > TQ_INT16
< td valign = "top" > < ul >
< li > signed 16 bit integer
< / ul >
< tr bgcolor = "#f0f0f0" > < td valign = "top" > TQ_INT32
< td valign = "top" > < ul >
< li > signed 32 bit integer
< / ul >
< tr bgcolor = "#d0d0d0" > < td valign = "top" > TQ_UINT8
< td valign = "top" > < ul >
< li > unsigned byte
< / ul >
< tr bgcolor = "#f0f0f0" > < td valign = "top" > TQ_UINT16
< td valign = "top" > < ul >
< li > unsigned 16 bit integer
< / ul >
< tr bgcolor = "#d0d0d0" > < td valign = "top" > TQ_UINT32
< td valign = "top" > < ul >
< li > unsigned 32 bit integer
< / ul >
< tr bgcolor = "#f0f0f0" > < td valign = "top" > float
< td valign = "top" > < ul >
< li > 32-bit floating point number using the standard IEEE-754 format
< / ul >
< tr bgcolor = "#d0d0d0" > < td valign = "top" > double
< td valign = "top" > < ul >
< li > 64-bit floating point number using the standard IEEE-754 format
< / ul >
< tr bgcolor = "#f0f0f0" > < td valign = "top" > char *
< td valign = "top" > < ul >
< li > The size of the string including the terminating 0 (TQ_UINT32)
< li > The string bytes including the terminating 0
< / ul >
The null string is represented as < tt > (TQ_UINT32) 0< / tt > .
< tr bgcolor = "#d0d0d0" > < td valign = "top" > TQBitArray
< td valign = "top" > < ul >
< li > The array size (TQ_UINT32)
< li > The array bits, i.e. (size + 7)/8 bytes
< / ul >
< tr bgcolor = "#f0f0f0" > < td valign = "top" > TQBrush
< td valign = "top" > < ul >
< li > The brush style (TQ_UINT8)
< li > The brush color (< a href = "tqcolor.html" > TQColor< / a > )
< li > If style is CustomPattern, the brush pixmap (< a href = "tqpixmap.html" > TQPixmap< / a > )
< / ul >
< tr bgcolor = "#d0d0d0" > < td valign = "top" > TQByteArray
< td valign = "top" > < ul >
< li > The array size (TQ_UINT32)
< li > The array bytes, i.e. size bytes
< / ul >
< tr bgcolor = "#f0f0f0" > < td valign = "top" > TQCString
< td valign = "top" > < ul >
< li > The size of the string including the terminating 0 (TQ_UINT32)
< li > The string bytes including the terminating 0
< / ul >
The null string is represented as < tt > (TQ_UINT32) 0< / tt > .
< tr bgcolor = "#d0d0d0" > < td valign = "top" > < a href = "tqcolor.html" > TQColor< / a >
< td valign = "top" > < ul > < li > RGB value serialized as a TQ_UINT32 < / ul >
< tr bgcolor = "#f0f0f0" > < td valign = "top" > TQColorGroup
< td valign = "top" > < ul >
< li > foreground (< a href = "tqbrush.html" > TQBrush< / a > )
< li > button (TQBrush)
< li > light (TQBrush)
< li > midLight (TQBrush)
< li > dark (TQBrush)
< li > mid (TQBrush)
< li > text (TQBrush)
< li > brightText (TQBrush)
< li > ButtonText (TQBrush)
< li > base (TQBrush)
< li > background (TQBrush)
< li > shadow (TQBrush)
< li > highlight (TQBrush)
< li > highlightedText (TQBrush)
< / ul >
< tr bgcolor = "#d0d0d0" > < td valign = "top" > TQCursor
< td valign = "top" > < ul >
< li > Shape id (TQ_INT16)
< li > If shape is BitmapCursor: The bitmap (< a href = "tqpixmap.html" > TQPixmap< / a > ), mask (TQPixmap) and hot spot (< a href = "tqpoint.html" > TQPoint< / a > )
< / ul >
< tr bgcolor = "#f0f0f0" > < td valign = "top" > TQDate
< td valign = "top" > < ul >
< li > Julian day (TQ_UINT32)
< / ul >
< tr bgcolor = "#d0d0d0" > < td valign = "top" > TQDateTime
< td valign = "top" > < ul >
< li > Date (< a href = "tqdate.html" > TQDate< / a > )
< li > Time (< a href = "tqtime.html" > TQTime< / a > )
< / ul >
< tr bgcolor = "#f0f0f0" > < td valign = "top" > TQFont
< td valign = "top" > < ul >
< li > The family (< a href = "tqcstring.html" > TQCString< / a > )
< li > The point size (TQ_INT16)
< li > The style hint (TQ_UINT8)
< li > The char set (TQ_UINT8)
< li > The weight (TQ_UINT8)
< li > The font bits (TQ_UINT8)
< / ul >
< tr bgcolor = "#d0d0d0" > < td valign = "top" > TQImage
< td valign = "top" > < ul >
< li > If the image is null a "null image" marker is saved;
otherwise the image is saved in PNG or BMP format (depending
on the stream version). If you want control of the format,
stream the image into a < a href = "tqbuffer.html" > TQBuffer< / a > (using < a href = "tqimageio.html" > TQImageIO< / a > ) and stream
that.
< / ul >
< tr bgcolor = "#f0f0f0" > < td valign = "top" > TQMap
< td valign = "top" > < ul >
< li > The number of items (TQ_UINT32)
< li > For all items, the key and value
< / ul >
< tr bgcolor = "#d0d0d0" > < td valign = "top" > TQPalette
< td valign = "top" > < ul >
< li > active (< a href = "tqcolorgroup.html" > TQColorGroup< / a > )
< li > disabled (TQColorGroup)
< li > inactive (TQColorGroup)
< / ul >
< tr bgcolor = "#f0f0f0" > < td valign = "top" > TQPen
< td valign = "top" > < ul >
< li > The pen styles (TQ_UINT8)
< li > The pen width (TQ_UINT8)
< li > The pen color (< a href = "tqcolor.html" > TQColor< / a > )
< / ul >
< tr bgcolor = "#d0d0d0" > < td valign = "top" > TQPicture
< td valign = "top" > < ul >
< li > The size of the picture data (TQ_UINT32)
< li > The raw bytes of picture data (char)
< / ul >
< tr bgcolor = "#f0f0f0" > < td valign = "top" > TQPixmap
< td valign = "top" > < ul >
< li > Save it as a PNG image.
< / ul >
< tr bgcolor = "#d0d0d0" > < td valign = "top" > TQPoint
< td valign = "top" > < ul >
< li > The x coordinate (TQ_INT32)
< li > The y coordinate (TQ_INT32)
< / ul >
< tr bgcolor = "#f0f0f0" > < td valign = "top" > TQPointArray
< td valign = "top" > < ul >
< li > The array size (TQ_UINT32)
< li > The array points (< a href = "tqpoint.html" > TQPoint< / a > )
< / ul >
< tr bgcolor = "#d0d0d0" > < td valign = "top" > TQRect
< td valign = "top" > < ul >
< li > left (TQ_INT32)
< li > top (TQ_INT32)
< li > right (TQ_INT32)
< li > bottom (TQ_INT32)
< / ul >
< tr bgcolor = "#f0f0f0" > < td valign = "top" > TQRegion
< td valign = "top" > < ul >
< li > The size of the data, i.e. 8 + 16 * (number of rectangles) (TQ_UINT32)
< li > TQRGN_RECTS (TQ_INT32)
< li > The number of rectangles (TQ_UINT32)
< li > The rectangles in sequential order (< a href = "tqrect.html" > TQRect< / a > )
< / ul >
< tr bgcolor = "#d0d0d0" > < td valign = "top" > TQSize
< td valign = "top" > < ul >
< li > width (TQ_INT32)
< li > height (TQ_INT32)
< / ul >
< tr bgcolor = "#f0f0f0" > < td valign = "top" > TQString
< td valign = "top" > < ul >
< li > If the string is null: 0xffffffff (TQ_UINT32)< br >
otherwise: The string length (TQ_UINT32) followed by the
data in UTF-16
< / ul >
< tr bgcolor = "#d0d0d0" > < td valign = "top" > TQTime
< td valign = "top" > < ul >
< li > Milliseconds since midnight (TQ_UINT32)
< / ul >
< tr bgcolor = "#f0f0f0" > < td valign = "top" > TQValueList
< td valign = "top" > < ul >
< li > The number of list elements (TQ_UINT32)
< li > All the elements in sequential order
< / ul >
< tr bgcolor = "#d0d0d0" > < td valign = "top" > TQVariant
< td valign = "top" > < ul >
< li > The type of the data (TQ_UINT32)
< li > The data of the specified type
< / ul >
< tr bgcolor = "#f0f0f0" > < td valign = "top" > TQWMatrix
< td valign = "top" > < ul >
< li > m11 (double)
< li > m12 (double)
< li > m21 (double)
< li > m22 (double)
< li > dx (double)
< li > dy (double)
< / ul >
< / table > < / center >
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