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QPainter(3qt)							 QPainter(3qt)

NAME
       QPainter - Does low-level painting e.g. on widgets

SYNOPSIS
       #include <qpainter.h>

       Inherits Qt.

       Inherited by QDirectPainter.

   Public Members
       enum CoordinateMode { CoordDevice, CoordPainter }
       QPainter ()
       QPainter ( const QPaintDevice * pd, bool unclipped = FALSE )
       QPainter ( const QPaintDevice * pd, const QWidget * copyAttributes,
	   bool unclipped = FALSE )
       ~QPainter ()
       bool begin ( const QPaintDevice * pd, bool unclipped = FALSE )
       bool begin ( const QPaintDevice * pd, const QWidget * copyAttributes,
	   bool unclipped = FALSE )
       bool end ()
       QPaintDevice * device () const
       bool isActive () const
       void flush ( const QRegion & region, CoordinateMode cm = CoordDevice )
       void flush ()
       void save ()
       void restore ()
       QFontMetrics fontMetrics () const
       QFontInfo fontInfo () const
       const QFont & font () const
       void setFont ( const QFont & font )
       const QPen & pen () const
       void setPen ( const QPen & pen )
       void setPen ( PenStyle style )
       void setPen ( const QColor & color )
       const QBrush & brush () const
       void setBrush ( const QBrush & brush )
       void setBrush ( BrushStyle style )
       void setBrush ( const QColor & color )
       QPoint pos () const  (obsolete)
       const QColor & backgroundColor () const
       void setBackgroundColor ( const QColor & c )
       BGMode backgroundMode () const
       void setBackgroundMode ( BGMode m )
       RasterOp rasterOp () const
       void setRasterOp ( RasterOp r )
       const QPoint & brushOrigin () const
       void setBrushOrigin ( int x, int y )
       void setBrushOrigin ( const QPoint & p )
       bool hasViewXForm () const
       bool hasWorldXForm () const
       void setViewXForm ( bool enable )
       QRect window () const
       void setWindow ( const QRect & r )
       void setWindow ( int x, int y, int w, int h )
       QRect viewport () const
       void setViewport ( const QRect & r )
       void setViewport ( int x, int y, int w, int h )
       void setWorldXForm ( bool enable )
       const QWMatrix & worldMatrix () const
       void setWorldMatrix ( const QWMatrix & m, bool combine = FALSE )
       void saveWorldMatrix ()	(obsolete)
       void restoreWorldMatrix ()  (obsolete)
       void scale ( double sx, double sy )
       void shear ( double sh, double sv )
       void rotate ( double a )
       void translate ( double dx, double dy )
       void resetXForm ()
       QPoint xForm ( const QPoint & pv ) const
       QRect xForm ( const QRect & rv ) const
       QPointArray xForm ( const QPointArray & av ) const
       QPointArray xForm ( const QPointArray & av, int index, int npoints )
	   const
       QPoint xFormDev ( const QPoint & pd ) const
       QRect xFormDev ( const QRect & rd ) const
       QPointArray xFormDev ( const QPointArray & ad ) const
       QPointArray xFormDev ( const QPointArray & ad, int index, int npoints )
	   const
       void setClipping ( bool enable )
       bool hasClipping () const
       QRegion clipRegion ( CoordinateMode m = CoordDevice ) const
       void setClipRect ( const QRect & r, CoordinateMode m = CoordDevice )
       void setClipRect ( int x, int y, int w, int h, CoordinateMode m =
	   CoordDevice )
       void setClipRegion ( const QRegion & rgn, CoordinateMode m =
	   CoordDevice )
       void drawPoint ( int x, int y )
       void drawPoint ( const QPoint & p )
       void drawPoints ( const QPointArray & a, int index = 0, int npoints =
	   -1 )
       void moveTo ( int x, int y )  (obsolete)
       void moveTo ( const QPoint & p )	 (obsolete)
       void lineTo ( int x, int y )  (obsolete)
       void lineTo ( const QPoint & p )	 (obsolete)
       void drawLine ( int x1, int y1, int x2, int y2 )
       void drawLine ( const QPoint & p1, const QPoint & p2 )
       void drawRect ( int x, int y, int w, int h )
       void drawRect ( const QRect & r )
       void drawWinFocusRect ( int x, int y, int w, int h )
       void drawWinFocusRect ( int x, int y, int w, int h, const QColor &
	   bgColor )
       void drawWinFocusRect ( const QRect & r )
       void drawWinFocusRect ( const QRect & r, const QColor & bgColor )
       void drawRoundRect ( int x, int y, int w, int h, int xRnd = 25, int
	   yRnd = 25 )
       void drawRoundRect ( const QRect & r, int xRnd = 25, int yRnd = 25 )
       void drawEllipse ( int x, int y, int w, int h )
       void drawEllipse ( const QRect & r )
       void drawArc ( int x, int y, int w, int h, int a, int alen )
       void drawArc ( const QRect & r, int a, int alen )
       void drawPie ( int x, int y, int w, int h, int a, int alen )
       void drawPie ( const QRect & r, int a, int alen )
       void drawChord ( int x, int y, int w, int h, int a, int alen )
       void drawChord ( const QRect & r, int a, int alen )
       void drawLineSegments ( const QPointArray & a, int index = 0, int
	   nlines = -1 )
       void drawPolyline ( const QPointArray & a, int index = 0, int npoints =
	   -1 )
       void drawPolygon ( const QPointArray & a, bool winding = FALSE, int
	   index = 0, int npoints = -1 )
       void drawConvexPolygon ( const QPointArray & pa, int index = 0, int
	   npoints = -1 )
       void drawCubicBezier ( const QPointArray & a, int index = 0 )
       void drawPixmap ( int x, int y, const QPixmap & pixmap, int sx = 0, int
	   sy = 0, int sw = -1, int sh = -1 )
       void drawPixmap ( const QPoint & p, const QPixmap & pm, const QRect &
	   sr )
       void drawPixmap ( const QPoint & p, const QPixmap & pm )
       void drawPixmap ( const QRect & r, const QPixmap & pm )
       void drawImage ( int x, int y, const QImage & image, int sx = 0, int sy
	   = 0, int sw = -1, int sh = -1, int conversionFlags = 0 )
       void drawImage ( const QPoint &, const QImage &, const QRect & sr, int
	   conversionFlags = 0 )
       void drawImage ( const QPoint & p, const QImage & i, int
	   conversion_flags = 0 )
       void drawImage ( const QRect & r, const QImage & i )
       void drawTiledPixmap ( int x, int y, int w, int h, const QPixmap &
	   pixmap, int sx = 0, int sy = 0 )
       void drawTiledPixmap ( const QRect & r, const QPixmap & pm, const
	   QPoint & sp )
       void drawTiledPixmap ( const QRect & r, const QPixmap & pm )
       void drawPicture ( const QPicture & pic )  (obsolete)
       void drawPicture ( int x, int y, const QPicture & pic )
       void drawPicture ( const QPoint & p, const QPicture & pic )
       void fillRect ( int x, int y, int w, int h, const QBrush & brush )
       void fillRect ( const QRect & r, const QBrush & brush )
       void eraseRect ( int x, int y, int w, int h )
       void eraseRect ( const QRect & r )
       enum TextDirection { Auto, RTL, LTR }
       void drawText ( int x, int y, const QString &, int len = -1,
	   TextDirection dir = Auto )
       void drawText ( const QPoint &, const QString &, int len = -1,
	   TextDirection dir = Auto )
       void drawText ( int x, int y, const QString &, int pos, int len,
	   TextDirection dir = Auto )
       void drawText ( const QPoint & p, const QString &, int pos, int len,
	   TextDirection dir = Auto )
       void drawText ( int x, int y, int w, int h, int flags, const QString &,
	   int len = -1, QRect * br = 0, QTextParag ** internal = 0 )
       void drawText ( const QRect & r, int tf, const QString & str, int len =
	   -1, QRect * brect = 0, QTextParag ** internal = 0 )
       QRect boundingRect ( int x, int y, int w, int h, int flags, const
	   QString &, int len = -1, QTextParag ** intern = 0 )
       QRect boundingRect ( const QRect & r, int flags, const QString & str,
	   int len = -1, QTextParag ** internal = 0 )
       int tabStops () const
       void setTabStops ( int ts )
       int * tabArray () const
       void setTabArray ( int * ta )
       HDC handle () const

   Static Public Members
       void redirect ( QPaintDevice * pdev, QPaintDevice * replacement )

RELATED FUNCTION DOCUMENTATION
       void qDrawShadeLine ( QPainter * p, int x1, int y1, int x2, int y2,
	   const QColorGroup & g, bool sunken, int lineWidth, int midLineWidth
	   )
       void qDrawShadeRect ( QPainter * p, int x, int y, int w, int h, const
	   QColorGroup & g, bool sunken, int lineWidth, int midLineWidth,
	   const QBrush * fill )
       void qDrawShadePanel ( QPainter * p, int x, int y, int w, int h, const
	   QColorGroup & g, bool sunken, int lineWidth, const QBrush * fill )
       void qDrawWinButton ( QPainter * p, int x, int y, int w, int h, const
	   QColorGroup & g, bool sunken, const QBrush * fill )
       void qDrawWinPanel ( QPainter * p, int x, int y, int w, int h, const
	   QColorGroup & g, bool sunken, const QBrush * fill )
       void qDrawPlainRect ( QPainter * p, int x, int y, int w, int h, const
	   QColor & c, int lineWidth, const QBrush * fill )

DESCRIPTION
       The QPainter class does low-level painting e.g. on widgets.

       The painter provides highly optimized functions to do most of the
       drawing GUI programs require. QPainter can draw everything from simple
       lines to complex shapes like pies and chords. It can also draw aligned
       text and pixmaps. Normally, it draws in a "natural" coordinate system,
       but it can also do view and world transformation.

       The typical use of a painter is:

       Construct a painter.

       Set a pen, a brush etc.

       Draw.

       Destroy the painter.

       Mostly, all this is done inside a paint event. (In fact, 99% of all
       QPainter use is in a reimplementation of QWidget::paintEvent(), and the
       painter is heavily optimized for such use.) Here's one very simple
       example:

	   void SimpleExampleWidget::paintEvent()
	   {
	       QPainter paint( this );
	       paint.setPen( Qt::blue );
	       paint.drawText( rect(), AlignCenter, "The Text" );
	   }

       Usage is simple, and there are many settings you can use:

       font() is the currently set font. If you set a font that isn't
       available, Qt finds a close match. In fact font() returns what you set
       using setFont() and fontInfo() returns the font actually being used
       (which may be the same).

       brush() is the currently set brush; the color or pattern that's used
       for filling e.g. circles.

       pen() is the currently set pen; the color or stipple that's used for
       drawing lines or boundaries.

       backgroundMode() is Opaque or Transparent, i.e. whether
       backgroundColor() is used or not.

       backgroundColor() only applies when backgroundMode() is Opaque and
       pen() is a stipple. In that case, it describes the color of the
       background pixels in the stipple.

       rasterOp() is how pixels drawn interact with the pixels already there.

       brushOrigin() is the origin of the tiled brushes, normally the origin
       of the window.

       viewport(), window(), worldMatrix() and many more make up the painter's
       coordinate transformation system. See The Coordinate System for an
       explanation of this, or see below for a very brief overview of the
       functions.

       hasClipping() is whether the painter clips at all. (The paint device
       clips, too.) If the painter clips, it clips to clipRegion().

       pos() is the current position, set by moveTo() and used by lineTo().

       Note that some of these settings mirror settings in some paint devices,
       e.g. QWidget::font(). QPainter::begin() (or the QPainter constructor)
       copies these attributes from the paint device. Calling, for example,
       QWidget::setFont() doesn't take effect until the next time a painter
       begins painting on it.

       save() saves all of these settings on an internal stack, restore() pops
       them back.

       The core functionality of QPainter is drawing, and there are functions
       to draw most primitives: drawPoint(), drawPoints(), drawLine(),
       drawRect(), drawWinFocusRect(), drawRoundRect(), drawEllipse(),
       drawArc(), drawPie(), drawChord(), drawLineSegments(), drawPolyline(),
       drawPolygon(), drawConvexPolygon() and drawCubicBezier(). All of these
       functions take integer coordinates; there are no floating-point
       versions since we want drawing to be as fast as possible.

       There are functions to draw pixmaps/images, namely drawPixmap(),
       drawImage() and drawTiledPixmap(). drawPixmap() and drawImage() produce
       the same result, except that drawPixmap() is faster on-screen and
       drawImage() faster and sometimes better on QPrinter and QPicture.

       Text drawing is done using drawText(), and when you need fine-grained
       positioning, boundingRect() tells you where a given drawText() command
       would draw.

       There is a drawPicture() function that draws the contents of an entire
       QPicture using this painter. drawPicture() is the only function that
       disregards all the painter's settings: the QPicture has its own
       settings.

       Normally, the QPainter operates on the device's own coordinate system
       (usually pixels), but QPainter has good support for coordinate
       transformation. See The Coordinate System for a more general overview
       and a simple example.

       The most common functions used are scale(), rotate(), translate() and
       shear(), all of which operate on the worldMatrix(). setWorldMatrix()
       can replace or add to the currently set worldMatrix().

       setViewport() sets the rectangle on which QPainter operates. The
       default is the entire device, which is usually fine, except on
       printers. setWindow() sets the coordinate system, that is, the
       rectangle that maps to viewport(). What's drawn inside the window()
       ends up being inside the viewport(). The window's default is the same
       as the viewport, and if you don't use the transformations, they are
       optimized away, gaining another little bit of speed.

       After all the coordinate transformation is done, QPainter can clip the
       drawing to an arbitrary rectangle or region. hasClipping() is TRUE if
       QPainter clips, and clipRegion() returns the clip region. You can set
       it using either setClipRegion() or setClipRect(). Note that the
       clipping can be slow. It's all system-dependent, but as a rule of
       thumb, you can assume that drawing speed is inversely proportional to
       the number of rectangles in the clip region.

       After QPainter's clipping, the paint device may also clip. For example,
       most widgets clip away the pixels used by child widgets, and most
       printers clip away an area near the edges of the paper. This additional
       clipping is not reflected by the return value of clipRegion() or
       hasClipping().

       QPainter also includes some less-used functions that are very useful on
       those occasions when they're needed.

       isActive() indicates whether the painter is active. begin() (and the
       most usual constructor) makes it active. end() (and the destructor)
       deactivates it. If the painter is active, device() returns the paint
       device on which the painter paints.

       Sometimes it is desirable to make someone else paint on an unusual
       QPaintDevice. QPainter supports a static function to do this,
       redirect(). We recommend not using it, but for some hacks it's perfect.

       setTabStops() and setTabArray() can change where the tab stops are, but
       these are very seldomly used.

       Warning: Note that QPainter does not attempt to work around coordinate
       limitations in the underlying window system. Some platforms may behave
       incorrectly with coordinates as small as +/-4000.

       See also QPaintDevice, QWidget, QPixmap, QPrinter, QPicture,
       Application Walkthrough, Coordinate System Overview, Graphics Classes,
       and Image Processing Classes.

   Member Type Documentation
QPainter::CoordinateMode
       QPainter::CoordDevice

       QPainter::CoordPainter

       See also clipRegion().

QPainter::TextDirection
       QPainter::Auto

       QPainter::RTL - right to left

       QPainter::LTR - left to right

       See also drawText().

MEMBER FUNCTION DOCUMENTATION
QPainter::QPainter ()
       Constructs a painter.

       Notice that all painter settings (setPen, setBrush etc.) are reset to
       default values when begin() is called.

       See also begin() and end().

QPainter::QPainter ( const QPaintDevice * pd, bool unclipped = FALSE )
       Constructs a painter that begins painting the paint device pd
       immediately. Depending on the underlying graphic system the painter
       will paint over children of the paintdevice if unclipped is TRUE.

       This constructor is convenient for short-lived painters, e.g. in a
       paint event and should be used only once. The constructor calls begin()
       for you and the QPainter destructor automatically calls end().

       Here's an example using begin() and end():

	       void MyWidget::paintEvent( QPaintEvent * )
	       {
		   QPainter p;
		   p.begin( this );
		   p.drawLine( ... );  // drawing code
		   p.end();
	       }

       The same example using this constructor:

	       void MyWidget::paintEvent( QPaintEvent * )
	       {
		   QPainter p( this );
		   p.drawLine( ... );  // drawing code
	       }

       Since the constructor cannot provide feedback when the initialization
       of the painter failed you should rather use begin() and end() to paint
       on external devices, e.g. printers.

       See also begin() and end().

QPainter::QPainter ( const QPaintDevice * pd, const QWidget * copyAttributes,
       bool unclipped = FALSE )
       Constructs a painter that begins painting the paint device pd
       immediately, with the default arguments taken from copyAttributes. The
       painter will paint over children of the paint device if unclipped is
       TRUE (although this is not supported on all platforms).

       See also begin().

QPainter::~QPainter ()
       Destroys the painter.

const QColor & QPainter::backgroundColor () const
       Returns the current background color.

       See also setBackgroundColor() and QColor.

BGMode QPainter::backgroundMode () const
       Returns the current background mode.

       See also setBackgroundMode() and BGMode.

bool QPainter::begin ( const QPaintDevice * pd, bool unclipped = FALSE )
       Begins painting the paint device pd and returns TRUE if successful;
       otherwise returns FALSE. If unclipped is TRUE, the painting will not be
       clipped at the paint device's boundaries, (although this is not
       supported by all platforms).

       The errors that can occur are serious problems, such as these:

	       p->begin( 0 ); // impossible - paint device cannot be 0
	       QPixmap pm( 0, 0 );
	       p->begin( pm ); // impossible - pm.isNull();
	       p->begin( myWidget );
	       p2->begin( myWidget ); // impossible - only one painter at a time

       Note that most of the time, you can use one of the constructors instead
       of begin(), and that end() is automatically done at destruction.

       Warning: A paint device can only be painted by one painter at a time.

       See also end() and flush().

       Examples:

bool QPainter::begin ( const QPaintDevice * pd, const QWidget *
       copyAttributes, bool unclipped = FALSE )
       This is an overloaded member function, provided for convenience. It
       behaves essentially like the above function.

       This version opens the painter on a paint device pd and sets the
       initial pen, background color and font from copyAttributes, painting
       over the paint device's children when unclipped is TRUE. This is
       equivalent to:

	       QPainter p;
	       p.begin( pd );
	       p.setPen( copyAttributes->foregroundColor() );
	       p.setBackgroundColor( copyAttributes->backgroundColor() );
	       p.setFont( copyAttributes->font() );

       This begin function is convenient for double buffering. When you draw
       in a pixmap instead of directly in a widget (to later bitBlt the pixmap
       into the widget) you will need to set the widget's font etc. This
       function does exactly that.

       Example:

	       void MyWidget::paintEvent( QPaintEvent * )
	       {
		   QPixmap pm(size());
		   QPainter p;
		   p.begin(&pm, this);
		   // ... potentially flickering paint operation ...
		   p.end();
		   bitBlt(this, 0, 0, &pm);
	       }

       See also end().

QRect QPainter::boundingRect ( int x, int y, int w, int h, int flags, const
       QString &, int len = -1, QTextParag ** intern = 0 )
       Returns the bounding rectangle of the aligned text that would be
       printed with the corresponding drawText() function using the first len
       characters of the string if len is > -1, or the whole of the string if
       len is -1. The drawing, and hence the bounding rectangle, is
       constrained to the rectangle that begins at point (x, y) with width w
       and hight h, or to the rectangle required to draw the text, whichever
       is the larger.

       The flags argument is the bitwise OR of the following flags:
       <center>.nf

       </center>

       Horizontal alignment defaults to AlignLeft and vertical alignment
       defaults to AlignTop.

       If several of the horizontal or several of the vertical alignment flags
       are set, the resulting alignment is undefined.

       The intern parameter should not be used.

       See also Qt::TextFlags.

QRect QPainter::boundingRect ( const QRect & r, int flags, const QString &
       str, int len = -1, QTextParag ** internal = 0 )
       This is an overloaded member function, provided for convenience. It
       behaves essentially like the above function.

       Returns the bounding rectangle of the aligned text that would be
       printed with the corresponding drawText() function using the first len
       characters from str if len is > -1, or the whole of str if len is -1.
       The drawing, and hence the bounding rectangle, is constrained to the
       rectangle r, or to the rectangle required to draw the text, whichever
       is the larger.

       The internal parameter should not be used.

       See also drawText(), fontMetrics(), QFontMetrics::boundingRect(), and
       Qt::TextFlags.

const QBrush & QPainter::brush () const
       Returns the painter's current brush.

       See also QPainter::setBrush().

       Examples:

const QPoint & QPainter::brushOrigin () const
       Returns the brush origin currently set.

       See also setBrushOrigin().

QRegion QPainter::clipRegion ( CoordinateMode m = CoordDevice ) const
       Returns the currently set clip region. Note that the clip region is
       given in physical device coordinates and not subject to any coordinate
       transformation if m is equal to CoordDevice (the default). If m equals
       CoordPainter the returned region is in model coordinates.

       See also setClipRegion(), setClipRect(), setClipping(), and
       QPainter::CoordinateMode.

       Example: themes/wood.cpp.

QPaintDevice * QPainter::device () const
       Returns the paint device on which this painter is currently painting,
       or 0 if the painter is not active.

       See also QPaintDevice::paintingActive().

       Examples:

void QPainter::drawArc ( int x, int y, int w, int h, int a, int alen )
       Draws an arc defined by the rectangle (x, y, w, h), the start angle a
       and the arc length alen.

       The angles a and alen are 1/16th of a degree, i.e. a full circle equals
       5760 (16*360). Positive values of a and alen mean counter-clockwise
       while negative values mean the clockwise direction. Zero degrees is at
       the 3 o'clock position.

       Example:

	       QPainter p( myWidget );
	       p.drawArc( 10,10, 70,100, 100*16, 160*16 ); // draws a "(" arc

       See also drawPie() and drawChord().

void QPainter::drawArc ( const QRect & r, int a, int alen )
       This is an overloaded member function, provided for convenience. It
       behaves essentially like the above function.

       Draws the arc that fits inside the rectangle r with start angle a and
       arc length alen.

void QPainter::drawChord ( int x, int y, int w, int h, int a, int alen )
       Draws a chord defined by the rectangle (x, y, w, h), the start angle a
       and the arc length alen.

       The chord is filled with the current brush().

       The angles a and alen are 1/16th of a degree, i.e. a full circle equals
       5760 (16*360). Positive values of a and alen mean counter-clockwise
       while negative values mean the clockwise direction. Zero degrees is at
       the 3 o'clock position.

       See also drawArc() and drawPie().

void QPainter::drawChord ( const QRect & r, int a, int alen )
       This is an overloaded member function, provided for convenience. It
       behaves essentially like the above function.

       Draws a chord that fits inside the rectangle r with start angle a and
       arc length alen.

void QPainter::drawConvexPolygon ( const QPointArray & pa, int index = 0, int
       npoints = -1 )
       Draws the convex polygon defined by the npoints points in pa starting
       at pa[index] (index defaults to 0).

       If the supplied polygon is not convex, the results are undefined.

       On some platforms (e.g. X Window), this is faster than drawPolygon().

       Warning: On X11, coordinates that do not fit into 16-bit signed values
       are truncated. This limitation is expected to go away in Qt 4.

       Example: aclock/aclock.cpp.

void QPainter::drawCubicBezier ( const QPointArray & a, int index = 0 )
       Draws a cubic Bezier curve defined by the control points in a, starting
       at a[index] (index defaults to 0).

       Control points after a[index + 3] are ignored. Nothing happens if there
       aren't enough control points.

       Warning: On X11, coordinates that do not fit into 16-bit signed values
       are truncated. This limitation is expected to go away in Qt 4.

void QPainter::drawEllipse ( int x, int y, int w, int h )
       Draws an ellipse with center at (x + w/2, y + h/2) and size (w, h).

       Examples:

void QPainter::drawEllipse ( const QRect & r )
       This is an overloaded member function, provided for convenience. It
       behaves essentially like the above function.

       Draws the ellipse that fits inside rectangle r.

void QPainter::drawImage ( int x, int y, const QImage & image, int sx = 0, int
       sy = 0, int sw = -1, int sh = -1, int conversionFlags = 0 )
       Draws at (x, y) the sw by sh area of pixels from (sx, sy) in image,
       using conversionFlags if the image needs to be converted to a pixmap.
       The default value for conversionFlags is 0; see convertFromImage() for
       information about what other values do.

       This function may convert image to a pixmap and then draw it, if
       device() is a QPixmap or a QWidget, or else draw it directly, if
       device() is a QPrinter or QPicture.

       Currently alpha masks of the image are ignored when painting on a
       QPrinter.

       See also drawPixmap() and QPixmap::convertFromImage().

       Example: canvas/canvas.cpp.

void QPainter::drawImage ( const QPoint &, const QImage &, const QRect & sr,
       int conversionFlags = 0 )
       This is an overloaded member function, provided for convenience. It
       behaves essentially like the above function.

       Draws the rectangle sr from the image at the given point.

void QPainter::drawImage ( const QPoint & p, const QImage & i, int
       conversion_flags = 0 )
       This is an overloaded member function, provided for convenience. It
       behaves essentially like the above function.

       Draws the image i at point p.

       If the image needs to be modified to fit in a lower-resolution result
       (e.g. converting from 32-bit to 8-bit), use the conversion_flags to
       specify how you'd prefer this to happen.

       See also Qt::ImageConversionFlags.

void QPainter::drawImage ( const QRect & r, const QImage & i )
       This is an overloaded member function, provided for convenience. It
       behaves essentially like the above function.

       Draws the image i into the rectangle r. The image will be scaled to fit
       the rectangle if image and rectangle dimensions differ.

void QPainter::drawLine ( int x1, int y1, int x2, int y2 )
       Draws a line from (x1, y1) to (x2, y2) and sets the current pen
       position to (x2, y2).

       See also pen().

       Examples:

void QPainter::drawLine ( const QPoint & p1, const QPoint & p2 )
       This is an overloaded member function, provided for convenience. It
       behaves essentially like the above function.

       Draws a line from point p1 to point p2.

void QPainter::drawLineSegments ( const QPointArray & a, int index = 0, int
       nlines = -1 )
       Draws nlines separate lines from points defined in a, starting at
       a[index] (index defaults to 0). If nlines is -1 (the default) all
       points until the end of the array are used (i.e. (a.size()-index)/2
       lines are drawn).

       Draws the 1st line from a[index] to a[index+1]. Draws the 2nd line from
       a[index+2] to a[index+3] etc.

       Warning: On X11, coordinates that do not fit into 16-bit signed values
       are truncated. This limitation is expected to go away in Qt 4.

       See also drawPolyline(), drawPolygon(), and QPen.

void QPainter::drawPicture ( int x, int y, const QPicture & pic )
       Replays the picture pic translated by (x, y).

       This function does exactly the same as QPicture::play() when called
       with (x, y) = (0, 0).

       Examples:

void QPainter::drawPicture ( const QPicture & pic )
       This function is obsolete. It is provided to keep old source working.
       We strongly advise against using it in new code.

       Use one of the other QPainter::drawPicture() functions with a (0, 0)
       offset instead.

void QPainter::drawPicture ( const QPoint & p, const QPicture & pic )
       This is an overloaded member function, provided for convenience. It
       behaves essentially like the above function.

       Draws picture pic at point p.

void QPainter::drawPie ( int x, int y, int w, int h, int a, int alen )
       Draws a pie defined by the rectangle (x, y, w, h), the start angle a
       and the arc length alen.

       The pie is filled with the current brush().

       The angles a and alen are 1/16th of a degree, i.e. a full circle equals
       5760 (16*360). Positive values of a and alen mean counter-clockwise
       while negative values mean the clockwise direction. Zero degrees is at
       the 3 o'clock position.

       See also drawArc() and drawChord().

       Examples:

void QPainter::drawPie ( const QRect & r, int a, int alen )
       This is an overloaded member function, provided for convenience. It
       behaves essentially like the above function.

       Draws a pie segment that fits inside the rectangle r with start angle a
       and arc length alen.

void QPainter::drawPixmap ( int x, int y, const QPixmap & pixmap, int sx = 0,
       int sy = 0, int sw = -1, int sh = -1 )
       Draws a pixmap at (x, y) by copying a part of pixmap into the paint
       device.

       (x, y) specifies the top-left point in the paint device that is to be
       drawn onto. (sx, sy) specifies the top-left point in pixmap that is to
       be drawn. The default is (0, 0).

       (sw, sh) specifies the size of the pixmap that is to be drawn. The
       default, (-1, -1), means all the way to the bottom right of the pixmap.

       Currently the mask of the pixmap or it's alpha channel are ignored when
       painting on a QPrinter.

       See also bitBlt() and QPixmap::setMask().

       Examples:

void QPainter::drawPixmap ( const QPoint & p, const QPixmap & pm, const QRect
       & sr )
       This is an overloaded member function, provided for convenience. It
       behaves essentially like the above function.

       Draws the rectangle sr of pixmap pm with its origin at point p.

void QPainter::drawPixmap ( const QPoint & p, const QPixmap & pm )
       This is an overloaded member function, provided for convenience. It
       behaves essentially like the above function.

       Draws the pixmap pm with its origin at point p.

void QPainter::drawPixmap ( const QRect & r, const QPixmap & pm )
       This is an overloaded member function, provided for convenience. It
       behaves essentially like the above function.

       Draws the pixmap pm into the rectangle r. The pixmap is scaled to fit
       the rectangle, if image and rectangle size disagree.

void QPainter::drawPoint ( int x, int y )
       Draws/plots a single point at (x, y) using the current pen.

       See also QPen.

       Examples:

void QPainter::drawPoint ( const QPoint & p )
       This is an overloaded member function, provided for convenience. It
       behaves essentially like the above function.

       Draws the point p.

void QPainter::drawPoints ( const QPointArray & a, int index = 0, int npoints
       = -1 )
       Draws/plots an array of points, a, using the current pen.

       If index is non-zero (the default is zero) only points from index are
       drawn. If npoints is negative (the default) the rest of the points from
       index are drawn. If npoints is zero or greater, npoints points are
       drawn.

       Warning: On X11, coordinates that do not fit into 16-bit signed values
       are truncated. This limitation is expected to go away in Qt 4.

void QPainter::drawPolygon ( const QPointArray & a, bool winding = FALSE, int
       index = 0, int npoints = -1 )
       Draws the polygon defined by the npoints points in a starting at
       a[index]. (index defaults to 0.)

       If npoints is -1 (the default) all points until the end of the array
       are used (i.e. a.size()-index line segments define the polygon).

       The first point is always connected to the last point.

       The polygon is filled with the current brush(). If winding is TRUE, the
       polygon is filled using the winding fill algorithm. If winding is
       FALSE, the polygon is filled using the even-odd (alternative) fill
       algorithm.

       Warning: On X11, coordinates that do not fit into 16-bit signed values
       are truncated. This limitation is expected to go away in Qt 4.

       See also drawLineSegments(), drawPolyline(), and QPen.

       Examples:

void QPainter::drawPolyline ( const QPointArray & a, int index = 0, int
       npoints = -1 )
       Draws the polyline defined by the npoints points in a starting at
       a[index]. (index defaults to 0.)

       If npoints is -1 (the default) all points until the end of the array
       are used (i.e. a.size()-index-1 line segments are drawn).

       Warning: On X11, coordinates that do not fit into 16-bit signed values
       are truncated. This limitation is expected to go away in Qt 4.

       See also drawLineSegments(), drawPolygon(), and QPen.

       Examples:

void QPainter::drawRect ( int x, int y, int w, int h )
       Draws a rectangle with upper left corner at (x, y) and with width w and
       height h.

       See also QPen and drawRoundRect().

       Examples:

void QPainter::drawRect ( const QRect & r )
       This is an overloaded member function, provided for convenience. It
       behaves essentially like the above function.

       Draws the rectangle r.

void QPainter::drawRoundRect ( int x, int y, int w, int h, int xRnd = 25, int
       yRnd = 25 )
       Draws a rectangle with rounded corners at (x, y), with width w and
       height h.

       The xRnd and yRnd arguments specify how rounded the corners should be.
       0 is angled corners, 99 is maximum roundedness.

       The width and height include all of the drawn lines.

       See also drawRect() and QPen.

       Examples:

void QPainter::drawRoundRect ( const QRect & r, int xRnd = 25, int yRnd = 25 )

       This is an overloaded member function, provided for convenience. It
       behaves essentially like the above function.

       Draws a rounded rectangle r, rounding to the x position xRnd and the y
       position yRnd on each corner.

void QPainter::drawText ( const QPoint & p, const QString &, int pos, int len,
       TextDirection dir = Auto )
       Draws the text from position pos, at point p. If len is -1 the entire
       string is drawn, otherwise just the first len characters. The text's
       direction is specified by dir.

       Note that the meaning of y is not the same for the two drawText()
       varieties. For overloads that take a simple x, y pair (or a point), the
       y value is the text's baseline; for overloads that take a rectangle,
       rect.y() is the top of the rectangle and the text is aligned within
       that rectangle in accordance with the alignment flags.

       See also QPainter::TextDirection.

       Examples:

void QPainter::drawText ( int x, int y, const QString &, int len = -1,
       TextDirection dir = Auto )
       This is an overloaded member function, provided for convenience. It
       behaves essentially like the above function.

       Draws the given text at position x, y. If len is -1 (the default) all
       the text is drawn, otherwise the first len characters are drawn. The
       text's direction is given by dir.

       See also QPainter::TextDirection.

void QPainter::drawText ( const QPoint &, const QString &, int len = -1,
       TextDirection dir = Auto )
       This is an overloaded member function, provided for convenience. It
       behaves essentially like the above function.

       Draws the text at the given point.

       See also QPainter::TextDirection.

void QPainter::drawText ( int x, int y, const QString &, int pos, int len,
       TextDirection dir = Auto )
       This is an overloaded member function, provided for convenience. It
       behaves essentially like the above function.

       Draws the text from position pos, at point (x, y). If len is -1 the
       entire string is drawn, otherwise just the first len characters. The
       text's direction is specified by dir.

void QPainter::drawText ( int x, int y, int w, int h, int flags, const QString
       &, int len = -1, QRect * br = 0, QTextParag ** internal = 0 )
       This is an overloaded member function, provided for convenience. It
       behaves essentially like the above function.

       Draws the given text within the rectangle starting at x, y, with width
       w and height h. If len is -1 (the default) all the text is drawn,
       otherwise the first len characters are drawn. The text's flags that are
       given in the flags parameter are Qt::AlignmentFlags and Qt::TextFlags
       OR'd together. br (if not null) is set to the actual bounding rectangle
       of the output. The internal parameter is for internal use only.

void QPainter::drawText ( const QRect & r, int tf, const QString & str, int
       len = -1, QRect * brect = 0, QTextParag ** internal = 0 )
       This is an overloaded member function, provided for convenience. It
       behaves essentially like the above function.

       Draws at most len characters from str in the rectangle r.

       This function draws formatted text. The tf text format is really of
       type Qt::AlignmentFlags and Qt::TextFlags OR'd together.

       Horizontal alignment defaults to AlignAuto and vertical alignment
       defaults to AlignTop.

       brect (if not null) is set to the actual bounding rectangle of the
       output. internal is, yes, internal.

       See also boundingRect().

void QPainter::drawTiledPixmap ( int x, int y, int w, int h, const QPixmap &
       pixmap, int sx = 0, int sy = 0 )
       Draws a tiled pixmap in the specified rectangle.

       (x, y) specifies the top-left point in the paint device that is to be
       drawn onto; with the width and height given by w and h. (sx, sy)
       specifies the top-left point in pixmap that is to be drawn. The default
       is (0, 0).

       Calling drawTiledPixmap() is similar to calling drawPixmap() several
       times to fill (tile) an area with a pixmap, but is potentially much
       more efficient depending on the underlying window system.

       See also drawPixmap().

void QPainter::drawTiledPixmap ( const QRect & r, const QPixmap & pm, const
       QPoint & sp )
       This is an overloaded member function, provided for convenience. It
       behaves essentially like the above function.

       Draws a tiled pixmap, pm, inside rectangle r with its origin at point
       sp.

void QPainter::drawTiledPixmap ( const QRect & r, const QPixmap & pm )
       This is an overloaded member function, provided for convenience. It
       behaves essentially like the above function.

       Draws a tiled pixmap, pm, inside rectangle r.

void QPainter::drawWinFocusRect ( int x, int y, int w, int h, const QColor &
       bgColor )
       Draws a Windows focus rectangle with upper left corner at (x, y) and
       with width w and height h using a pen color that contrasts with
       bgColor.

       This function draws a stippled rectangle (XOR is not used) that is used
       to indicate keyboard focus (when the QApplication::style() is
       WindowStyle).

       The pen color used to draw the rectangle is either white or black
       depending on the color of bgColor (see QColor::gray()).

       Warning: This function draws nothing if the coordinate system has been
       rotated or sheared.

       See also drawRect() and QApplication::style().

void QPainter::drawWinFocusRect ( int x, int y, int w, int h )
       This is an overloaded member function, provided for convenience. It
       behaves essentially like the above function.

       Draws a Windows focus rectangle with upper left corner at (x, y) and
       with width w and height h.

       This function draws a stippled XOR rectangle that is used to indicate
       keyboard focus (when QApplication::style() is WindowStyle).

       Warning: This function draws nothing if the coordinate system has been
       rotated or sheared.

       See also drawRect() and QApplication::style().

void QPainter::drawWinFocusRect ( const QRect & r )
       This is an overloaded member function, provided for convenience. It
       behaves essentially like the above function.

       Draws rectangle r as a window focus rectangle.

void QPainter::drawWinFocusRect ( const QRect & r, const QColor & bgColor )
       This is an overloaded member function, provided for convenience. It
       behaves essentially like the above function.

       Draws rectangle r as a window focus rectangle using background color
       bgColor.

bool QPainter::end ()
       Ends painting. Any resources used while painting are released.

       Note that while you mostly don't need to call end(), the destructor
       will do it, there is at least one common case when it is needed, namely
       double buffering.

	       QPainter p( myPixmap, this )
	       // ...
	       p.end(); // stops drawing on myPixmap
	       p.begin( this );
	       p.drawPixmap( 0, 0, myPixmap );

       Since you can't draw a QPixmap while it is being painted, it is
       necessary to close the active painter.

       See also begin() and isActive().

       Examples:

void QPainter::eraseRect ( int x, int y, int w, int h )
       Erases the area inside x, y, w, h. Equivalent to fillRect( x, y, w, h,
       backgroundColor() ).

       Examples:

void QPainter::eraseRect ( const QRect & r )
       This is an overloaded member function, provided for convenience. It
       behaves essentially like the above function.

       Erases the area inside the rectangle r.

void QPainter::fillRect ( int x, int y, int w, int h, const QBrush & brush )
       Fills the rectangle (x, y, w, h) with the brush.

       You can specify a QColor as brush, since there is a QBrush constructor
       that takes a QColor argument and creates a solid pattern brush.

       See also drawRect().

       Examples:

void QPainter::fillRect ( const QRect & r, const QBrush & brush )
       This is an overloaded member function, provided for convenience. It
       behaves essentially like the above function.

       Fills the rectangle r using brush brush.

void QPainter::flush ( const QRegion & region, CoordinateMode cm = CoordDevice
       )
       Flushes any buffered drawing operations inside the region region using
       clipping mode cm.

       The flush may update the whole device if the platform does not support
       flushing to a specified region.

       See also CoordinateMode.

void QPainter::flush ()
       This is an overloaded member function, provided for convenience. It
       behaves essentially like the above function.

       Flushes any buffered drawing operations.

const QFont & QPainter::font () const
       Returns the currently set painter font.

       See also setFont() and QFont.

       Example: fileiconview/qfileiconview.cpp.

QFontInfo QPainter::fontInfo () const
       Returns the font info for the painter, if the painter is active. It is
       not possible to obtain font information for an inactive painter, so the
       return value is undefined if the painter is not active.

       See also fontMetrics() and isActive().

QFontMetrics QPainter::fontMetrics () const
       Returns the font metrics for the painter, if the painter is active. It
       is not possible to obtain metrics for an inactive painter, so the
       return value is undefined if the painter is not active.

       See also fontInfo() and isActive().

       Examples:

HDC QPainter::handle () const
       Returns the platform-dependent handle used for drawing. Using this
       function is not portable.

bool QPainter::hasClipping () const
       Returns TRUE if clipping has been set; otherwise returns FALSE.

       See also setClipping().

       Example: themes/wood.cpp.

bool QPainter::hasViewXForm () const
       Returns TRUE if view transformation is enabled; otherwise returns
       FALSE.

       See also setViewXForm() and xForm().

bool QPainter::hasWorldXForm () const
       Returns TRUE if world transformation is enabled; otherwise returns
       FALSE.

       See also setWorldXForm().

bool QPainter::isActive () const
       Returns TRUE if the painter is active painting, i.e. begin() has been
       called and end() has not yet been called; otherwise returns FALSE.

       See also QPaintDevice::paintingActive().

       Examples:

void QPainter::lineTo ( int x, int y )
       This function is obsolete. It is provided to keep old source working.
       We strongly advise against using it in new code.

       Use drawLine() instead.

       Draws a line from the current pen position to (x, y) and sets (x, y) to
       be the new current pen position.

       See also QPen, moveTo(), drawLine(), and pos().

void QPainter::lineTo ( const QPoint & p )
       This is an overloaded member function, provided for convenience. It
       behaves essentially like the above function.

       Draws a line to the point p.

void QPainter::moveTo ( int x, int y )
       This function is obsolete. It is provided to keep old source working.
       We strongly advise against using it in new code.

       Sets the current pen position to (x, y)

       See also lineTo() and pos().

void QPainter::moveTo ( const QPoint & p )
       This is an overloaded member function, provided for convenience. It
       behaves essentially like the above function.

       Moves to the point p.

const QPen & QPainter::pen () const
       Returns the painter's current pen.

       See also setPen().

       Examples:

QPoint QPainter::pos () const
       This function is obsolete. It is provided to keep old source working.
       We strongly advise against using it in new code.

       Returns the current position of the pen.

       See also moveTo().

RasterOp QPainter::rasterOp () const
       Returns the current raster operation.

       See also setRasterOp() and RasterOp.

void QPainter::redirect ( QPaintDevice * pdev, QPaintDevice * replacement )
       [static]
       Redirects all paint commands for a paint device, pdev, to another paint
       device, replacement, unless replacement is 0. If replacement is 0, the
       redirection for pdev is removed.

       In general, you'll probably find calling QPixmap::grabWidget() or
       QPixmap::grabWindow() is an easier solution.

void QPainter::resetXForm ()
       Resets any transformations that were made using translate(), scale(),
       shear(), rotate(), setWorldMatrix(), setViewport() and setWindow().

       See also worldMatrix(), viewport(), and window().

void QPainter::restore ()
       Restores the current painter state (pops a saved state off the stack).

       See also save().

       Example: aclock/aclock.cpp.

void QPainter::restoreWorldMatrix ()
       This function is obsolete. It is provided to keep old source working.
       We strongly advise against using it in new code.

       We recommend using restore() instead.

void QPainter::rotate ( double a )
       Rotates the coordinate system a degrees counterclockwise.

       See also translate(), scale(), shear(), resetXForm(), setWorldMatrix(),
       and xForm().

       Examples:

void QPainter::save ()
       Saves the current painter state (pushes the state onto a stack). A
       save() must be followed by a corresponding restore(). end() unwinds the
       stack.

       See also restore().

       Example: aclock/aclock.cpp.

void QPainter::saveWorldMatrix ()
       This function is obsolete. It is provided to keep old source working.
       We strongly advise against using it in new code.

       We recommend using save() instead.

void QPainter::scale ( double sx, double sy )
       Scales the coordinate system by (sx, sy).

       See also translate(), shear(), rotate(), resetXForm(),
       setWorldMatrix(), and xForm().

       Example: xform/xform.cpp.

void QPainter::setBackgroundColor ( const QColor & c )
       Sets the background color of the painter to c.

       The background color is the color that is filled in when drawing opaque
       text, stippled lines and bitmaps. The background color has no effect in
       transparent background mode (which is the default).

       See also backgroundColor(), setBackgroundMode(), and BackgroundMode.

void QPainter::setBackgroundMode ( BGMode m )
       Sets the background mode of the painter to m, which must be either
       TransparentMode (the default) or OpaqueMode.

       Transparent mode draws stippled lines and text without setting the
       background pixels. Opaque mode fills these space with the current
       background color.

       Note that in order to draw a bitmap or pixmap transparently, you must
       use QPixmap::setMask().

       See also backgroundMode() and setBackgroundColor().

       Example: picture/picture.cpp.

void QPainter::setBrush ( BrushStyle style )
       Sets the painter's brush to black color and the specified style.

       See also brush() and QBrush.

       Examples:

void QPainter::setBrush ( const QBrush & brush )
       This is an overloaded member function, provided for convenience. It
       behaves essentially like the above function.

       Sets the painter's brush to brush.

       The brush defines how shapes are filled.

       See also brush().

void QPainter::setBrush ( const QColor & color )
       This is an overloaded member function, provided for convenience. It
       behaves essentially like the above function.

       Sets the painter's brush to have style SolidPattern and the specified
       color.

       See also brush() and QBrush.

void QPainter::setBrushOrigin ( int x, int y )
       Sets the brush origin to (x, y).

       The brush origin specifies the (0, 0) coordinate of the painter's
       brush. This setting only applies to pattern brushes and pixmap brushes.

       See also brushOrigin().

void QPainter::setBrushOrigin ( const QPoint & p )
       This is an overloaded member function, provided for convenience. It
       behaves essentially like the above function.

       Sets the brush origin to point p.

void QPainter::setClipRect ( int x, int y, int w, int h, CoordinateMode m =
       CoordDevice )
       Sets the clip region to the rectangle x, y, w, h and enables clipping.
       The clip mode is set to m.

       If m is CoordDevice (the default), the coordinates given for the clip
       region are taken to be physical device coordinates and are not subject
       to any coordinate transformations. If m is CoordPainter, the
       coordinates given for the clip region are taken to be model
       coordinates.

       See also setClipRegion(), clipRegion(), setClipping(), and
       QPainter::CoordinateMode.

       Examples:

void QPainter::setClipRect ( const QRect & r, CoordinateMode m = CoordDevice )

       This is an overloaded member function, provided for convenience. It
       behaves essentially like the above function.

       Sets the clip region to the rectangle r and enables clipping. The clip
       mode is set to m.

       See also CoordinateMode.

void QPainter::setClipRegion ( const QRegion & rgn, CoordinateMode m =
       CoordDevice )
       Sets the clip region to rgn and enables clipping. The clip mode is set
       to m.

       Note that the clip region is given in physical device coordinates and
       not subject to any coordinate transformation.

       See also setClipRect(), clipRegion(), setClipping(), and
       CoordinateMode.

       Examples:

void QPainter::setClipping ( bool enable )
       Enables clipping if enable is TRUE, or disables clipping if enable is
       FALSE.

       See also hasClipping(), setClipRect(), and setClipRegion().

       Example: themes/wood.cpp.

void QPainter::setFont ( const QFont & font )
       Sets the painter's font to font.

       This font is used by subsequent drawText() functions. The text color is
       the same as the pen color.

       See also font() and drawText().

       Examples:

void QPainter::setPen ( const QPen & pen )
       Sets a new painter pen.

       The pen defines how to draw lines and outlines, and it also defines the
       text color.

       See also pen().

       Examples:

void QPainter::setPen ( PenStyle style )
       This is an overloaded member function, provided for convenience. It
       behaves essentially like the above function.

       Sets the painter's pen to have style style, width 0 and black color.

       See also pen() and QPen.

void QPainter::setPen ( const QColor & color )
       This is an overloaded member function, provided for convenience. It
       behaves essentially like the above function.

       Sets the painter's pen to have style SolidLine, width 0 and the
       specified color.

       See also pen() and QPen.

void QPainter::setRasterOp ( RasterOp r )
       Sets the raster operation to r. The default is CopyROP.

       See also rasterOp() and Qt::RasterOp.

void QPainter::setTabArray ( int * ta )
       Sets the tab stop array to ta. This puts tab stops at ta[0], ta[1] and
       so on. The array is null-terminated.

       If both a tab array and a tab top size is set, the tab array wins.

       See also tabArray(), setTabStops(), drawText(), and fontMetrics().

void QPainter::setTabStops ( int ts )
       Set the tab stop width to ts, i.e. locates tab stops at ts, 2*ts, 3*ts
       and so on.

       Tab stops are used when drawing formatted text with ExpandTabs set.
       This fixed tab stop value is used only if no tab array is set (which is
       the default case).

       A value of 0 (the default) implies a tabstop setting of 8 times the
       width of the character 'x' in the font currently set on the painter.

       See also tabStops(), setTabArray(), drawText(), and fontMetrics().

void QPainter::setViewXForm ( bool enable )
       Enables view transformations if enable is TRUE, or disables view
       transformations if enable is FALSE.

       See also hasViewXForm(), setWindow(), setViewport(), setWorldMatrix(),
       setWorldXForm(), and xForm().

void QPainter::setViewport ( int x, int y, int w, int h )
       Sets the viewport rectangle view transformation for the painter and
       enables view transformation.

       The viewport rectangle is part of the view transformation. The viewport
       specifies the device coordinate system and is specified by the x, y, w
       width and h height parameters. Its sister, the window(), specifies the
       logical coordinate system.

       The default viewport rectangle is the same as the device's rectangle.
       See the Coordinate System Overview for an overview of coordinate
       transformation.

       See also viewport(), setWindow(), setViewXForm(), setWorldMatrix(),
       setWorldXForm(), and xForm().

       Example: aclock/aclock.cpp.

void QPainter::setViewport ( const QRect & r )
       This is an overloaded member function, provided for convenience. It
       behaves essentially like the above function.

       Sets the painter's viewport to rectangle r.

void QPainter::setWindow ( int x, int y, int w, int h )
       Sets the window rectangle view transformation for the painter and
       enables view transformation.

       The window rectangle is part of the view transformation. The window
       specifies the logical coordinate system and is specified by the x, y, w
       width and h height parameters. Its sister, the viewport(), specifies
       the device coordinate system.

       The default window rectangle is the same as the device's rectangle. See
       the Coordinate System Overview for an overview of coordinate
       transformation.

       See also window(), setViewport(), setViewXForm(), setWorldMatrix(), and
       setWorldXForm().

       Examples:

void QPainter::setWindow ( const QRect & r )
       This is an overloaded member function, provided for convenience. It
       behaves essentially like the above function.

       Sets the painter's window to rectangle r.

void QPainter::setWorldMatrix ( const QWMatrix & m, bool combine = FALSE )
       Sets the world transformation matrix to m and enables world
       transformation.

       If combine is TRUE, then m is combined with the current transformation
       matrix, otherwise m replaces the current transformation matrix.

       If m is the identity matrix and combine is FALSE, this function calls
       setWorldXForm(FALSE). (The identity matrix is the matrix where
       QWMatrix::m11() and QWMatrix::m22() are 1.0 and the rest are 0.0.)

       World transformations are applied after the view transformations (i.e.
       window and viewport).

       The following functions can transform the coordinate system without
       using a QWMatrix:

       translate()

       scale()

       shear()

       rotate()

       They operate on the painter's worldMatrix() and are implemented like
       this:

	       void QPainter::rotate( double a )
	       {
		   QWMatrix m;
		   m.rotate( a );
		   setWorldMatrix( m, TRUE );
	       }

       Note that you should always use combine when you are drawing into a
       QPicture. Otherwise it may not be possible to replay the picture with
       additional transformations. Using translate(), scale(), etc., is safe.

       For a brief overview of coordinate transformation, see the Coordinate
       System Overview.

       See also worldMatrix(), setWorldXForm(), setWindow(), setViewport(),
       setViewXForm(), xForm(), and QWMatrix.

       Examples:

void QPainter::setWorldXForm ( bool enable )
       Enables world transformations if enable is TRUE, or disables world
       transformations if enable is FALSE. The world transformation matrix is
       not changed.

       See also setWorldMatrix(), setWindow(), setViewport(), setViewXForm(),
       and xForm().

void QPainter::shear ( double sh, double sv )
       Shears the coordinate system by (sh, sv).

       See also translate(), scale(), rotate(), resetXForm(),
       setWorldMatrix(), and xForm().

int * QPainter::tabArray () const
       Returns the currently set tab stop array.

       See also setTabArray().

int QPainter::tabStops () const
       Returns the tab stop setting.

       See also setTabStops().

void QPainter::translate ( double dx, double dy )
       Translates the coordinate system by (dx, dy). After this call, (dx, dy)
       is added to points.

       For example, the following code draws the same point twice:

	       void MyWidget::paintEvent()
	       {
		   QPainter paint( this );
		   paint.drawPoint( 0, 0 );
		   paint.translate( 100.0, 40.0 );
		   paint.drawPoint( -100, -40 );
	       }

       See also scale(), shear(), rotate(), resetXForm(), setWorldMatrix(),
       and xForm().

       Examples:

QRect QPainter::viewport () const
       Returns the viewport rectangle.

       See also setViewport() and setViewXForm().

       Example: aclock/aclock.cpp.

QRect QPainter::window () const
       Returns the window rectangle.

       See also setWindow() and setViewXForm().

const QWMatrix & QPainter::worldMatrix () const
       Returns the world transformation matrix.

       See also setWorldMatrix().

QPoint QPainter::xForm ( const QPoint & pv ) const
       Returns the point pv transformed from model coordinates to device
       coordinates.

       See also xFormDev() and QWMatrix::map().

QRect QPainter::xForm ( const QRect & rv ) const
       This is an overloaded member function, provided for convenience. It
       behaves essentially like the above function.

       Returns the rectangle rv transformed from model coordinates to device
       coordinates.

       If world transformation is enabled and rotation or shearing has been
       specified, then the bounding rectangle is returned.

       See also xFormDev() and QWMatrix::map().

QPointArray QPainter::xForm ( const QPointArray & av ) const
       This is an overloaded member function, provided for convenience. It
       behaves essentially like the above function.

       Returns the point array av transformed from model coordinates to device
       coordinates.

       See also xFormDev() and QWMatrix::map().

QPointArray QPainter::xForm ( const QPointArray & av, int index, int npoints )
       const
       This is an overloaded member function, provided for convenience. It
       behaves essentially like the above function.

       Returns the point array av transformed from model coordinates to device
       coordinates. The index is the first point in the array and npoints
       denotes the number of points to be transformed. If npoints is negative,
       all points from av[index] until the last point in the array are
       transformed.

       The returned point array consists of the number of points that were
       transformed.

       Example:

	       QPointArray a(10);
	       QPointArray b;
	       b = painter.xForm(a, 2, 4);  // b.size() == 4
	       b = painter.xForm(a, 2, -1); // b.size() == 8

       See also xFormDev() and QWMatrix::map().

QRect QPainter::xFormDev ( const QRect & rd ) const
       Returns the rectangle rd transformed from device coordinates to model
       coordinates.

       If world transformation is enabled and rotation or shearing is used,
       then the bounding rectangle is returned.

       See also xForm() and QWMatrix::map().

QPoint QPainter::xFormDev ( const QPoint & pd ) const
       This is an overloaded member function, provided for convenience. It
       behaves essentially like the above function.

       Returns the point pd transformed from device coordinates to model
       coordinates.

       See also xForm() and QWMatrix::map().

QPointArray QPainter::xFormDev ( const QPointArray & ad ) const
       This is an overloaded member function, provided for convenience. It
       behaves essentially like the above function.

       Returns the point array ad transformed from device coordinates to model
       coordinates.

       See also xForm() and QWMatrix::map().

QPointArray QPainter::xFormDev ( const QPointArray & ad, int index, int
       npoints ) const
       This is an overloaded member function, provided for convenience. It
       behaves essentially like the above function.

       Returns the point array ad transformed from device coordinates to model
       coordinates. The index is the first point in the array and npoints
       denotes the number of points to be transformed. If npoints is negative,
       all points from ad[index] until the last point in the array are
       transformed.

       The returned point array consists of the number of points that were
       transformed.

       Example:

	       QPointArray a(10);
	       QPointArray b;
	       b = painter.xFormDev(a, 1, 3);  // b.size() == 3
	       b = painter.xFormDev(a, 1, -1); // b.size() == 9

       See also xForm() and QWMatrix::map().

RELATED FUNCTION DOCUMENTATION
void qDrawPlainRect ( QPainter * p, int x, int y, int w, int h, const QColor &
       c, int lineWidth, const QBrush * fill )
       #include <qdrawutil.h>

       Draws the plain rectangle specified by (x, y, w, h) using the painter
       p.

       The color argument c specifies the line color.

       The lineWidth argument specifies the line width.

       The rectangle's interior is filled with the fill brush unless fill is
       0.

       If you want to use a QFrame widget instead, you can make it display a
       plain rectangle, for example QFrame::setFrameStyle( QFrame::Box |
       QFrame::Plain ).

       Warning: This function does not look at QWidget::style() or
       QApplication::style(). Use the drawing functions in QStyle to make
       widgets that follow the current GUI style.

       See also qDrawShadeRect() and QStyle::drawPrimitive().

void qDrawShadeLine ( QPainter * p, int x1, int y1, int x2, int y2, const
       QColorGroup & g, bool sunken, int lineWidth, int midLineWidth )
       #include <qdrawutil.h>

       Draws a horizontal (y1 == y2) or vertical (x1 == x2) shaded line using
       the painter p.

       Nothing is drawn if y1 != y2 and x1 != x2 (i.e. the line is neither
       horizontal nor vertical).

       The color group argument g specifies the shading colors (light, dark
       and middle colors).

       The line appears sunken if sunken is TRUE, or raised if sunken is
       FALSE.

       The lineWidth argument specifies the line width for each of the lines.
       It is not the total line width.

       The midLineWidth argument specifies the width of a middle line drawn in
       the QColorGroup::mid() color.

       If you want to use a QFrame widget instead, you can make it display a
       shaded line, for example QFrame::setFrameStyle( QFrame::HLine |
       QFrame::Sunken ).

       Warning: This function does not look at QWidget::style() or
       QApplication::style(). Use the drawing functions in QStyle to make
       widgets that follow the current GUI style.

       See also qDrawShadeRect(), qDrawShadePanel(), and
       QStyle::drawPrimitive().

void qDrawShadePanel ( QPainter * p, int x, int y, int w, int h, const
       QColorGroup & g, bool sunken, int lineWidth, const QBrush * fill )
       #include <qdrawutil.h>

       Draws the shaded panel specified by (x, y, w, h) using the painter p.

       The color group argument g specifies the shading colors (light, dark
       and middle colors).

       The panel appears sunken if sunken is TRUE, or raised if sunken is
       FALSE.

       The lineWidth argument specifies the line width.

       The panel's interior is filled with the fill brush unless fill is 0.

       If you want to use a QFrame widget instead, you can make it display a
       shaded panel, for example QFrame::setFrameStyle( QFrame::Panel |
       QFrame::Sunken ).

       Warning: This function does not look at QWidget::style() or
       QApplication::style(). Use the drawing functions in QStyle to make
       widgets that follow the current GUI style.

       See also qDrawWinPanel(), qDrawShadeLine(), qDrawShadeRect(), and
       QStyle::drawPrimitive().

void qDrawShadeRect ( QPainter * p, int x, int y, int w, int h, const
       QColorGroup & g, bool sunken, int lineWidth, int midLineWidth, const
       QBrush * fill )
       #include <qdrawutil.h>

       Draws the shaded rectangle specified by (x, y, w, h) using the painter
       p.

       The color group argument g specifies the shading colors (light, dark
       and middle colors).

       The rectangle appears sunken if sunken is TRUE, or raised if sunken is
       FALSE.

       The lineWidth argument specifies the line width for each of the lines.
       It is not the total line width.

       The midLineWidth argument specifies the width of a middle line drawn in
       the QColorGroup::mid() color.

       The rectangle's interior is filled with the fill brush unless fill is
       0.

       If you want to use a QFrame widget instead, you can make it display a
       shaded rectangle, for example QFrame::setFrameStyle( QFrame::Box |
       QFrame::Raised ).

       Warning: This function does not look at QWidget::style() or
       QApplication::style(). Use the drawing functions in QStyle to make
       widgets that follow the current GUI style.

       See also qDrawShadeLine(), qDrawShadePanel(), qDrawPlainRect(),
       QStyle::drawItem(), QStyle::drawControl(), and
       QStyle::drawComplexControl().

void qDrawWinButton ( QPainter * p, int x, int y, int w, int h, const
       QColorGroup & g, bool sunken, const QBrush * fill )
       #include <qdrawutil.h>

       Draws the Windows-style button specified by (x, y, w, h) using the
       painter p.

       The color group argument g specifies the shading colors (light, dark
       and middle colors).

       The button appears sunken if sunken is TRUE, or raised if sunken is
       FALSE.

       The line width is 2 pixels.

       The button's interior is filled with the *fill brush unless fill is 0.

       Warning: This function does not look at QWidget::style() or
       QApplication::style(). Use the drawing functions in QStyle to make
       widgets that follow the current GUI style.

       See also qDrawWinPanel() and QStyle::drawControl().

void qDrawWinPanel ( QPainter * p, int x, int y, int w, int h, const
       QColorGroup & g, bool sunken, const QBrush * fill )
       #include <qdrawutil.h>

       Draws the Windows-style panel specified by (x, y, w, h) using the
       painter p.

       The color group argument g specifies the shading colors.

       The panel appears sunken if sunken is TRUE, or raised if sunken is
       FALSE.

       The line width is 2 pixels.

       The button's interior is filled with the fill brush unless fill is 0.

       If you want to use a QFrame widget instead, you can make it display a
       shaded panel, for example QFrame::setFrameStyle( QFrame::WinPanel |
       QFrame::Raised ).

       Warning: This function does not look at QWidget::style() or
       QApplication::style(). Use the drawing functions in QStyle to make
       widgets that follow the current GUI style.

       See also qDrawShadePanel(), qDrawWinButton(), and
       QStyle::drawPrimitive().

SEE ALSO
       http://doc.trolltech.com/qpainter.html
       http://www.trolltech.com/faq/tech.html

COPYRIGHT
       Copyright 1992-2007 Trolltech ASA, http://www.trolltech.com.  See the
       license file included in the distribution for a complete license
       statement.

AUTHOR
       Generated automatically from the source code.

BUGS
       If you find a bug in Qt, please report it as described in
       http://doc.trolltech.com/bughowto.html.	Good bug reports help us to
       help you. Thank you.

       The definitive Qt documentation is provided in HTML format; it is
       located at $QTDIR/doc/html and can be read using Qt Assistant or with a
       web browser. This man page is provided as a convenience for those users
       who prefer man pages, although this format is not officially supported
       by Trolltech.

       If you find errors in this manual page, please report them to qt-
       bugs@trolltech.com.  Please include the name of the manual page
       (qpainter.3qt) and the Qt version (3.3.8).

Trolltech AS			2 February 2007			 QPainter(3qt)
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