介绍了BMP文件结构，编程实现BMP文件读写及数据访问，解释了DIB与BMP之间的关系，并且分别用面向过程的方法和面向对象的方法实现图像的可视化编程。-Introduction of the BMP file structure, programming and implementation BMP file to read and write data access, explained the DIB and the relationship between BMP and were process-oriented approach and object-oriented way to achieve images of visual programming.