From bd0f3345a938b35ce6a12f6150373b0955b8dd12 Mon Sep 17 00:00:00 2001 From: Timothy Pearson Date: Sun, 10 Jul 2011 15:24:15 -0500 Subject: Add Qt3 development HEAD version --- doc/html/qpaintevent.html | 119 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 119 insertions(+) create mode 100644 doc/html/qpaintevent.html (limited to 'doc/html/qpaintevent.html') diff --git a/doc/html/qpaintevent.html b/doc/html/qpaintevent.html new file mode 100644 index 0000000..cb065ba --- /dev/null +++ b/doc/html/qpaintevent.html @@ -0,0 +1,119 @@ + + + + + +QPaintEvent Class + + + + + + + +

QPaintEvent Class Reference

+ +

The QPaintEvent class contains event parameters for paint events. +More... +

#include <qevent.h> +

Inherits QEvent. +

List of all member functions. +

Public Members

QPaintEvent ( const QRegion & paintRegion, bool erased = TRUE )
QPaintEvent ( const QRect & paintRect, bool erased = TRUE )
QPaintEvent ( const QRegion & paintRegion, const QRect & paintRect, bool erased = TRUE )
const QRect & rect () const
const QRegion & region () const
bool erased () const

Detailed Description

+ + +The QPaintEvent class contains event parameters for paint events. +

Paint events are sent to widgets that need to update themselves, +for instance when part of a widget is exposed because a covering +widget is moved. +

The event contains a region() that needs to be updated, and a +rect() that is the bounding rectangle of that region. Both are +provided because many widgets can't make much use of region(), and +rect() can be much faster than region().boundingRect(). Painting +is clipped to region() during processing of a paint event. +

The erased() function returns TRUE if the region() has been +cleared to the widget's background (see +QWidget::backgroundMode()), and FALSE if the region's contents are +arbitrary. +

Member Function Documentation

QPaintEvent::QPaintEvent ( const QRegion & paintRegion, bool erased = TRUE ) +

+ +

Constructs a paint event object with the region that should be +updated. The region is given by paintRegion. If erased is +TRUE the region will be cleared before repainting. + +

QPaintEvent::QPaintEvent ( const QRect & paintRect, bool erased = TRUE ) +

+ +

Constructs a paint event object with the rectangle that should be +updated. The region is also given by paintRect. If erased is +TRUE the region will be cleared before repainting. + +

QPaintEvent::QPaintEvent ( const QRegion & paintRegion, const QRect & paintRect, bool erased = TRUE ) +

+ +

Constructs a paint event object with the rectangle paintRect +that should be updated. The region is given by paintRegion. If +erased is TRUE the region will be cleared before repainting. + +

bool QPaintEvent::erased () const +

+ +

Returns TRUE if the paint event region (or rectangle) has been +erased with the widget's background; otherwise returns FALSE. + +

const QRect & QPaintEvent::rect () const +

+ +

Returns the rectangle that should be updated. +

See also region() and QPainter::setClipRect(). + +

Examples: life/life.cpp, qfd/fontdisplayer.cpp, showimg/showimg.cpp, t10/cannon.cpp, t11/cannon.cpp, t13/cannon.cpp, and tooltip/tooltip.cpp. +

const QRegion & QPaintEvent::region () const +

+ +

Returns the region that should be updated. +

See also rect() and QPainter::setClipRegion(). + +

Examples: qfd/fontdisplayer.cpp and scribble/scribble.cpp. + +

+ +

Trademarks +

Qt 3.3.8

+ -- cgit v1.2.3