在Windows中绘制位数组(RGB) [英] Draw array of bits(rgb) in windows

问题描述

我有一个原始的rgb数据数组.我想知道如何在Windows OS的屏幕上绘制此像素?

I have an array of raw rgb data. I would like to know how can I draw this pixels on the screen in Windows OS?

现在我使用API​​函数DrawDIBits，但必须打开图像数据.

Now I use API function DrawDIBits, but I must turn up my image data.

推荐答案

我总是使用SetDiBitsToDevice，但是drawDIBits也可以(没有检查).

I always use SetDiBitsToDevice, but drawDIBits could be okay as well (haven't checked).

关于Windows blit函数的颠倒性质:

As for the upside-down nature of the windows blit functions:

有一种解决方法.如果将BITMAPINFOHEADER或BITMAPINFO结构传递给该函数，则只需取反bitmap-height成员中的值即可.这将告诉GDI进行blit处理，就好像高度为正数一样，但是会将数据解释为以自顶向下的顺序存储的蜜蜂.

There is a workaround. If you pass a BITMAPINFOHEADER or BITMAPINFO structure to the function just negate the value in the bitmap-height member. This will tell GDI to do the blit as if the height would be positive, but interpret the data as beeing stored in a top-down order.

您也可以通过此"hack"获得不错的速度改进.

You may get a nice speed improvement by this "hack" as well.

如果您想改组像素的字节顺序(例如，将ARGB转换为BGRA左右)，则可以使用BITMAPV4HEADER结构，并告诉GDI您的像素数据的组织方式.该功能很少使用，但自WIN98起可用.我想说这些天使用起来很省钱.

If you want to shuffle the byte-order of the pixels (e.g. turn ARGB into BGRA or so) you can use the BITMAPV4HEADER structure and tell GDI how your pixel-data is organized. That's a functionality that is rarely used but works since WIN98. I'd say it's save to use it these days..

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