Visual C++位图操作。在基于对话框的工程中加入菜单操作，用代码操纵菜单，Windows位图文件的操作，设备相关位图的概念。还有Visual c++的随机函数。-Visual C++ bit map operation. Based on the project in the dialog box to add the menu operation, use code to manipulate the menu, Windows bitmap file of the operation,