內容

• 公共函數
• 詳細描述

QRasterWindow 類

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

頭：	#include <QRasterWindow>
qmake:	QT += gui
Since:	Qt 5.4
繼承：	QPaintDeviceWindow

• 所有成員列錶，包括繼承成員

公共函數

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

• 2 公共函數繼承自 QPaintDeviceWindow
• 80 public functions inherited from QWindow
• 14 公共函數繼承自 QPaintDevice
• 32 公共函數繼承自 QObject
• 6 公共函數繼承自 QSurface

額外繼承成員

• 16 特性繼承自 QWindow
• 1 特性繼承自 QObject
• 1 公共槽繼承自 QPaintDeviceWindow
• 22 public slots inherited from QWindow
• 1 公共槽繼承自 QObject
• 18 信號繼承自 QWindow
• 2 信號繼承自 QObject
• 1 靜態公共成員繼承自 QWindow
• 11 靜態公共成員繼承自 QObject
• 1 保護函數繼承自 QPaintDeviceWindow
• 18 保護函數繼承自 QWindow
• 1 保護函數繼承自 QPaintDevice
• 9 保護函數繼承自 QObject

詳細描述

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 光柵窗口範例 that uses these classes directly.

另請參閱 QPaintDeviceWindow::paintEvent () 和 QPaintDeviceWindow::update ().

成員函數文檔編製

QRasterWindow:: QRasterWindow ( QWindow * parent = Q_NULLPTR)

構造新的 QRasterWindow with parent .

QRasterWindow:: ~QRasterWindow ()

Destroys the instance of QRasterWindow.