本书首先对Win32 API函数做完整的概述；然后收录五大类函数：窗口管理、图形设备接口、系统服务、国际特性以及网络服务；在附录部分，讲解如何在Visual Basic和Delphi中对其调用。-The book begins with the Win32 API function do a complete overview　then included five categories: window management, graphics device interface, system services, international character and network services　in the appendix to explain how the Visual Basic and Delphi to their calls.