enum QGraphicsView::CacheModeFlagflags QGraphicsView::CacheMode

本文主要是介绍enum QGraphicsView::CacheModeFlagflags QGraphicsView::CacheMode，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

缓存模式

QGraphicsView::CacheNone

All painting is done directly onto the viewport.

直接在视口上绘制

QGraphicsView::CacheBackground

The background is cached. This affects both custom backgrounds, and backgrounds based on the backgroundBrush property. When this flag is enabled, QGraphicsView will allocate one pixmap with the full size of the viewport.

背景被缓存。即影响自定义背景，也影响基于backgroundBrush属性的背景。当该标志被启用，QGraphicsView将分配一个带有整个视口大小的pixmap。

 

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