如何在Windows窗体PictureBox中选择一个区域？ [英] How to select a region in a Windows Forms PictureBox?

问题描述

我想通过允许用户选择
A矩形区域（类似于它如何在Photoshop中进行与选择工具），以获得在PictureBox图片的一部分。

I want to get a part of picture in a PictureBox by allowing the user to select a rectangular region (similar to how it can be done in Photoshop with selection tool).

我怎么能这样做呢？

推荐答案

您必须借鉴的基础上，他们点击和拖动矩形或线条。你的出发点是鼠标X，Y，然后你会得到从鼠标释放X，Y的最后一点。

You would have to draw a rectangle or lines based on where they clicked and dragged. Your starting point would be the mouse x, y and then you would get the last point from mouse release x, y.

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