getpixel使用C ++的位图 [英] getpixel a bitmap with c++

问题描述

我完全是一个初学者，我想从位图获取像素值..msdn并不能帮助我很多，帮助我如何获取图像，而不是从图像获取像素值.简单的代码...

谢谢..

I am totally beginner,,i''d like to get pixel value from a bitmap..msdn doesnt help me much, help me how to obtain an image, than get the pixel value from it..with c++ with a simple code...

Thanks..

推荐答案

使用类Bitmap，构造函数/Save方法进行文件读/写，使用GetPixel/SetPixel进行单个像素访问，LockBits/Unlock位用于访问整个像素阵列.

Use the class Bitmap, constructor/Save method for file read/write, GetPixel/SetPixel for individual pixel access, LockBits/Unlock bits for accessing the whole array of pixels.

MSDN可以为您提供很多帮助，您只需要了解足够的知识即可.在C ++中，Get/SetPixel非常慢，而是创建DIBSECTION，您将可以快速访问基础像素数据.

MSDN helps you plenty, you just need to know enough to understand it. Get/SetPixel is very slow in C++, create a DIBSECTION instead, and you''ll have fast access to the underlying pixel data.

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