如何在MFC中从2D数组绘制图片？ [英] How to draw the picture from 2D Array in MFC?

问题描述

Hi
i希望在VC ++中生成一个数值为Array [1024] [1024]的2D数组的图像（Bitmap），每个值都是从0到255的RGB。是否有任何VC ++函数要做这个？



先谢谢。

Hi i want to generate in VC++ an image (Bitmap) from a 2D array of numerical value Array[1024][1024] that each value is a RGB from 0 to 255. is there any VC++ function to do this?

Thanks in Advance.

推荐答案

看看 SetDIBitsToDevice Win32功能：

http://msdn.microsoft.com/en-us/library/windows/desktop/dd162974(v=vs.85).aspx



这是一个非常古老的，我曾经做过同样的工作 - 我有一个8位信号强度的二维数组，并映射到一个托盘的颜色。在你的情况下，颜色将是灰度，但没有理由他们需要。



我能想到的一个问题 - 数据会必须是4字节宽的倍数，但是因为你的数据是1024x1024，这没问题。

另一个是我似乎记得它将图像颠倒了，但你可以玩用坐标来看它是如何工作的。



MSDN声称来自Win2000的支持，但我在Windows 3.1中使用这个功能，所以它非常古老，非常好极了，非常强大。



祝你好运！



Iain。

Have a look at SetDIBitsToDevice Win32 function:
http://msdn.microsoft.com/en-us/library/windows/desktop/dd162974(v=vs.85).aspx

It''s a very old one, and one I used to do the same job you are doing - I had a 2d array of 8bit signal strength, and that mapped to a pallette of colours. In your case, the colours will be greyscale, but there''s no reason they need to be.

One "gotcha" I can think of - the data will have to be a multiple of 4 bytes wide, but as your data is 1024x1024, that''s no problem.
Another is that I seem to remember it painting the image upside down, but you can play with the coordinates to see how it works.

MSDN claims support from Win2000, but I was using this function in Windows 3.1, so it''s very ancient, very tricky, and very powerful.

Good luck!

Iain.

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