从画布上删除内容 [英] Erasing the content from canvas

问题描述

您好，我正在开发地铁风格的油漆应用程序.我想应用橡皮擦功能.那么，如何像在MS Paint中一样，做一个这样的工具来从画布中擦除内容呢?

我不想清除整个画布，无论我单击或拖动指针的位置如何，都应该删除指针移动的路径.

Hi, I am developing a paint like application in metro style. I want to apply a eraser functionality. So how can I make such a tool for erasing the content from canvas like we do in MS paint ?

I don''t want to clear whole canvas, wherever I click or drag the pointer, the path traveled by the pointer should be erased.

推荐答案

我没有经验在Metro中，但是在光栅环境中进行擦除只不过是使用背景色绘画.

I have no experience in metro, but erasing in a raster environment is nothing more than painting with background color.

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