DOS常驻程序（TSR）Windows化的实现

Implementation of Diverting TSR Programs to Windows Programs

将ＤＯＳ常驻程序（ＴＳＲ）变为能在ＤＯＳ和Ｗｉｎｄｏｗｓ下都能运行的双态程序的实现方法，由ＤＯＳ设备驱动程序截取２１Ｈ中断调用，判断并决定激活哪种类型的弹出式窗口，以及调用哪类程序，如果是在ＤＯＳ环境下，可直接激活ＴＳＲ执行。如果要在Ｗｉｎｄｏｗｓ下运行，则由Ｗｉｎｄｏｗｓ组程序进一步判断是标准模式，还是增强模式，对应两个不同的子程序进行设备驱动程序的联系和负责Ｗｉｎｄｏｗｓ对话窗口的弹出和处理。

This paper mainly discusses how to divert TSR programs to bi status programs,which can be executed both under DOS and Windows. A DOS device driver catches the 21H interrupting call and then determines which kinds of popup windows to activate and which programs to execute. If in DOS,the TSR can be executed immediately;however,under Windows,the group programs must further distinguish whether it is a standard mode or an enhanced mode. Then, two separate subroutines will respectively link the device drivers and activate the pop up of the dialogue windows. A detailed implementation process is also presented.