利用DLL实现在数据库管理系统中对硬件端口的控制

Using DLL to achieve the control of Hardware Interface in the Data-base Management System

介绍了在VisualFoxPro中利用动态链接库实现硬件端口控制 ,同时介绍了在VisualC

The paper introduces the method of using DLL to achieve the control over hardware interface in Visual Foxpro,the method of setting up DLL in Visual C++ and the method of putting DLL to use in Visual Foxpro.