内容

• 公共函数
• 详细描述

QRasterWindow 类

QRasterWindow is a convenience class for using QPainter 在 QWindow 更多...

头：	#include <QRasterWindow>
qmake:	QT += gui
Since:	Qt 5.4
继承：	QPaintDeviceWindow

• 所有成员列表，包括继承成员

公共函数

	QRasterWindow (QWindow * parent = Q_NULLPTR)
	~QRasterWindow ()

• 2 公共函数继承自 QPaintDeviceWindow
• 80 public functions inherited from QWindow
• 14 公共函数继承自 QPaintDevice
• 32 公共函数继承自 QObject
• 6 公共函数继承自 QSurface

额外继承成员

• 16 特性继承自 QWindow
• 1 特性继承自 QObject
• 1 公共槽继承自 QPaintDeviceWindow
• 22 public slots inherited from QWindow
• 1 公共槽继承自 QObject
• 18 信号继承自 QWindow
• 2 信号继承自 QObject
• 1 静态公共成员继承自 QWindow
• 11 静态公共成员继承自 QObject
• 1 保护函数继承自 QPaintDeviceWindow
• 18 保护函数继承自 QWindow
• 1 保护函数继承自 QPaintDevice
• 9 保护函数继承自 QObject

详细描述

QRasterWindow is a convenience class for using QPainter 在 QWindow

QRasterWindow 是 QWindow with a raster-based, non-OpenGL surface. On top of the functionality offered by QWindow , QRasterWindow adds a virtual paintEvent () function and the possibility to open a QPainter on itself. The underlying paint engine will be the raster one, meaning that all drawing will happen on the CPU. For performing accelerated, OpenGL-based drawing, use QOpenGLWindow 代替。

Internally the class is thin wrapper for QWindow and QBackingStore and is very similar to the 光栅窗口范例 that uses these classes directly.

另请参阅 QPaintDeviceWindow::paintEvent () 和 QPaintDeviceWindow::update ().

成员函数文档编制

QRasterWindow:: QRasterWindow ( QWindow * parent = Q_NULLPTR)

构造新的 QRasterWindow with parent .

QRasterWindow:: ~QRasterWindow ()

Destroys the instance of QRasterWindow.