看看这个问题

[coolrain]

这是VxD编程书籍中的一个实例，调试通过，在COM2口上的鼠标中断可截获，但程序运行结束后鼠标不响应，那位高手指点一下，中断处理还存在什么问题？中断处理流程是否正确？多谢。


*****MyHwint.H*****
#include <vtoolscp.h>

#define DEVICE_CLASS MyHwIntDevice
#define MYHWINT_DeviceID UNDEFINED_DEVICE_ID
#define MYHWINT_Init_Order UNDEFINED_INIT_ORDER
#define MYHWINT_Major 1
#define MYHWINT_Minor 0

#define MY_IRQ 3 //COM2 的中断号


class MyHwInt:public VHardwareInt
{
public:
MyHwInt();
virtual VOID OnHardwareInt(VMHANDLE);
};


class MyHwIntDevice : public VDevice
{
public:
virtual BOOL OnSysDynamicDeviceInit();
virtual BOOL OnSysDynamicDeviceExit();
MyHwInt *pMyIRQ;
};
******MyHwint.cpp******
#define DEVICE_MAIN
#include "myhwint.h"
Declare_Virtual_Device(MYHWINT)
#undef DEVICE_MAIN

PDWORD pwVal=(PDWORD)0x9FFFC; //线性地址

MyHwInt::MyHwInt():VHardwareInt(MY_IRQ,VPICD_OPT_CAN_SHARE,0,0)
{
}

VOID MyHwInt::OnHardwareInt(VMHANDLE hVM)
{
(*pwVal)++;
_inp(0x2fa);
_inp(0x2fd);
_inp(0x2f8);
sendPhysicalEOI();
}



BOOL MyHwIntDevice::OnSysDynamicDeviceInit()
{
pMyIRQ=new MyHwInt();
*pwVal=0;
if(pMyIRQ&&pMyIRQ->hook())
{
_outp(0x2f9,1);
_outp(0x2fa,0);
_outp(0x2fc,0x0b);
pMyIRQ->physicalUnmask();
return TRUE;
}
else return FALSE;
}

BOOL MyHwIntDevice::OnSysDynamicDeviceExit()
{
//pMyIRQ->unhook();
_outp(0x2f9,0);
_outp(0x2fc,0);
pMyIRQ->unhook();
pMyIRQ->physicalUnmask();

delete pMyIRQ;
return TRUE;
}


****ring3层应用程序：*****
#include "stdafx.h"
#include "conio.h"
#include "windows.h"

void main(int argc, char* argv[])
{
HANDLE hVxD;
PDWORD pwVal=(PDWORD)0x9FFFC;
hVxD=CreateFile("\\\\.\\Myhwint.vxd",0,0,0,CREATE_NEW,FILE_FLAG_DELETE_ON_CLOSE,0);
if(hVxD==INVALID_HANDLE_VALUE)
return;
cprintf("Press any key to continue!...");
while(!_kbhit())
cprintf("The value is %d\n",*pwVal);
CloseHandle(hVxD);

}

[coolrain]

nothing

[holyfire]

看不出来。