保存由两个不同对象绘制的图片框图形 [英] save picturebox graphics drawn by two different objects

问题描述

我有一个带有从不同对象绘制的图形的图片框。在我使用的一个对象中

Hi,

I have a picturebox with graphics drawn from different objects. In one object I used

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你最大的问题是每个图形都是一个有自己背景的平面位图。如果你合并两个背景将完全覆盖另一个背景。


我想如果一个背景全黑，那就说......

你可以循环遍历它的所有像素，检查它是否不是黑色，并将其复制到另一个图形上。

Your biggest problem is that each graphic is a flat bitmap with its own background. If you merge the two one background will completely overwrite the other.

I suppose if the background of one is all black let''s say...
You could loop through all the pixels of it, check if it is NOT black, and copy it onto the other graphic.

但是图片框正确地显示了图像。有一点我不明白为什么你不能只抓住它在图片框中的现有图像并保存它？

But the picturebox shows the image correctly. One thing i dont understand is why can''t you just grab the existing image that it''s in picturebox and save it?

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