Referencia de la Clase QMacCursorWidget

Diagrama de herencias de QMacCursorWidget

Lista de todos los miembros.

Métodos públicos
	QMacCursorWidget (const QBitmap *b, const QBitmap *m)
	~QMacCursorWidget ()
Métodos protegidos
void	paintEvent (QPaintEvent *)

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Documentación del constructor y destructor

QMacCursorWidget::QMacCursorWidget	(	const QBitmap *	b,
		const QBitmap *	m
	)		[inline]

QMacCursorWidget::~QMacCursorWidget

(

)

[inline]

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Documentación de las funciones miembro

void QMacCursorWidget::paintEvent

(

QPaintEvent *

)

[inline, protected, virtual]

This event handler can be reimplemented in a subclass to receive paint events.

A paint event is a request to repaint all or part of the widget. It can happen as a result of repaint() or update(), or because the widget was obscured and has now been uncovered, or for many other reasons.

Many widgets can simply repaint their entire surface when asked to, but some slow widgets need to optimize by painting only the requested region: QPaintEvent::region(). This speed optimization does not change the result, as painting is clipped to that region during event processing. QListView and QCanvas do this, for example.

Qt also tries to speed up painting by merging multiple paint events into one. When update() is called several times or the window system sends several paint events, Qt merges these events into one event with a larger region (see QRegion::unite()). repaint() does not permit this optimization, so we suggest using update() when possible.

When the paint event occurs, the update region has normally been erased, so that you're painting on the widget's background. There are a couple of exceptions and QPaintEvent::erased() tells you whether the widget has been erased or not.

The background can be set using setBackgroundMode(), setPaletteBackgroundColor() or setBackgroundPixmap(). The documentation for setBackgroundMode() elaborates on the background; we recommend reading it.

Ver también:

event(), repaint(), update(), QPainter, QPixmap, QPaintEvent

Reimplementado de QWidget.

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La documentación para esta clase fue generada a partir del siguiente fichero:

• src/qt/src/kernel/qcursor_mac.cpp