摘要
本文叙述了如何在程序中调用中断33H实现鼠标操作，着重讨论了怎样对旧版软件修改，使之具备鼠标功能，编程实现鼠标的双点的捕获，给出了具体的程序设计步骤．
This paper describes how to call DOS interrupt 33H for mouse support in programmingand amphasizes how to convert the earlier version program into a mouse support one. pro-gramming steps are laid out in the paper and an example is given to show the converting pro-cedure.
