qwtpaintbuffer.3

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.TH "QwtPaintBuffer" 3 "4 Nov 2003" "Qwt User's Guide" \" -*- nroff -*-
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.SH NAME
QwtPaintBuffer \- 
.SH SYNOPSIS
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.PP
.SH "Detailed Description"
.PP 
Paint buffer for Qwt widgets. 

QwtPaintBuffer offers a simple way to en/disable double buffering. Double buffering is enabled as default and in general there will be no reason to change this. 
.PP
.SS "Public Member Functions"

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.RI "\fBQwtPaintBuffer\fP ()"
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.RI "\fBQwtPaintBuffer\fP (QPaintDevice *, const  QRect &, QPainter *p=NULL)"
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.RI "virtual \fB~QwtPaintBuffer\fP ()"
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.RI "void \fBopen\fP (QPaintDevice *, const  QRect &, QPainter *p=NULL)"
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.RI "void \fBclose\fP ()"
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.RI "QPainter * \fBpainter\fP ()"
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.RI "const  QPaintDevice * \fBdevice\fP ()"
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.RI "const  QPixmap & \fBbuffer\fP () const "
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.SS "Static Public Member Functions"

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.RI "void \fBsetEnabled\fP (bool enable)"
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.RI "bool \fBisEnabled\fP ()"
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.SS "Protected Member Functions"

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.RI "void \fBflush\fP ()"
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.SH "Constructor & Destructor Documentation"
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.SS "QwtPaintBuffer::QwtPaintBuffer ()"
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Default constructor. 
.SS "QwtPaintBuffer::QwtPaintBuffer (QPaintDevice * device, const QRect & rect, QPainter * painter = NULL)"
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Create an open paint buffer 
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\fBParameters:\fP
.RS 4
\fIdevice\fP Device to paint on 
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\fIrect\fP Rect to paint on 
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\fIpainter\fP Painter to paint on device. In case of 0 QwtPaintBuffer uses an internal painter
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\fBSee also:\fP
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\fBQwtPaintBuffer::open()\fP 
.RE
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.SS "QwtPaintBuffer::~\fBQwtPaintBuffer\fP ()\fC [virtual]\fP"
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Closes the buffer 
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\fBSee also:\fP
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\fBQwtPaintBuffer::close()\fP 
.RE
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.SH "Member Function Documentation"
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.SS "const QPixmap& QwtPaintBuffer::buffer () const"
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Return Buffer used for double buffering. 
.SS "void QwtPaintBuffer::close ()"
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Flush the internal pixmap buffer to the device and close the buffer. 
.SS "const  QPaintDevice * QwtPaintBuffer::device ()"
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\fBReturns:\fP
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Device to paint on 
.RE
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.SS "void QwtPaintBuffer::flush ()\fC [protected]\fP"
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Flush the internal pixmap buffer to the device. 
.SS "bool QwtPaintBuffer::isEnabled ()\fC [static]\fP"
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\fBReturns:\fP
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TRUE if double buffering is enabled, FALSE otherwise. 
.RE
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.SS "void QwtPaintBuffer::open (QPaintDevice * device, const QRect & rect, QPainter * painter = NULL)"
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Open the buffer 
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\fBParameters:\fP
.RS 4
\fIdevice\fP Device to paint on 
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\fIrect\fP Rect to paint on 
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\fIpainter\fP Painter to paint on device. In case of 0 QwtPaintBuffer uses an internal painter 
.RE
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.SS "QPainter * QwtPaintBuffer::painter ()"
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\fBReturns:\fP
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Depending on \fBisEnabled()\fP the painter connected to an internal pixmap buffer otherwise the painter connected to the device. 
.RE
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.SS "void QwtPaintBuffer::setEnabled (bool enable)\fC [static]\fP"
.PP
Enable/Disable double buffering. Please note that this is a global switch for all QwtPaintBuffers, but won't change opened buffers. 

.SH "Author"
.PP 
Generated automatically by Doxygen for Qwt User's Guide from the source code.