VC++没有提供使用十分方便的DIB绘制方法，只好自己去创建一个实用的DIB类了。本系统中建立了一个专门的类DIB来处理设备无关位图，表4－1列出了对位图的操作函数。-VC++ does not provide a very easy to use DIB drawing method, but to themselves to create a practical DIB class. The system created a special class of DIB to handle device-independent bitmap, Table 4-1 lists the functions of the operation of the bitmap.