在使用API函数操作AVI文件时，一定要注意用AVIFileInit()来初始化AVI库，程序结束时用AVIFileExit()释放AVI库，否则API函数无法使用。现以操作包含真彩色图像的AVI文件为例，给出Cavi类的部分函数的具体实现，其中CaviCreate()函数用于读取AVI文件信息并初始化Cavi类的成员，例如根据AVI文件信息定义每帧图像的宽、高、每帧图像的信息头结构等等；函数AviRead(int mFrame)用于从AVI文件中读取第mFrame帧。-When using API functions to manipulate AVI file, be sure to pay attention to AVIFileInit () to initialize AVI library, with AVIFileExit at the end of the program () to release AVI library API functions can not be used otherwise. AVI files are in operation contains true color images, for example, give a specific realization of the function class Cavi, wherein () such as information of each function is defined by the AVI file is an AVI file used for reading information, and initialization of member Cavi class, CaviCreate frame image width, height, each frame of the image information of the first structure and the like　function AviRead (int mFrame) for reading the frames　the first mFrame AVI file.