利用最原始的setpixel函数显示各种类型的bmp图像，对于理解bmp图片帮助很大-Using the most primitive setpixel function display various types of bmp images, bmp image of great help for understanding

使用C++实现的BMP图片解码程序，实现对8位，16位，24位，32位的解码，并通过SetPixel显示。-The C++ program is to decode picture with BMP file format,it can decode bmp with 8bmp,16bmp,24bmp and 32bmp.