这个里面

#ifndef _PORTTALK_H_
#define _PORTTALK_H_

#include
#include

#ifdef _MSC_VER
static void ShowMessage(LPCTSTR str){
        MessageBox(NULL, str, NULL, 0);
}
#endif

//---------------------------------------------------------------------------

//32768-65535 are reserved for customers
#define PORTTALK_TYPE                       40000

// The IOCTRL function codes from 0x800 to 0xFFF are for customer use
#define IOCTL_IOPM_RESTRICT_ALL_ACCESS      CTL_CODE(PORTTALK_TYPE, 0x900, METHOD_BUFFERED, FILE_ANY_ACCESS)
#define IOCTL_IOPM_ALLOW_EXCUSIVE_ACCESS    CTL_CODE(PORTTALK_TYPE, 0x901, METHOD_BUFFERED, FILE_ANY_ACCESS)
#define IOCTL_SET_IOPM                      CTL_CODE(PORTTALK_TYPE, 0x902, METHOD_BUFFERED, FILE_ANY_ACCESS)
#define IOCTL_ENABLE_IOPM_ON_PROCESSID      CTL_CODE(PORTTALK_TYPE, 0x903, METHOD_BUFFERED, FILE_ANY_ACCESS)
#define IOCTL_READ_PORT_UCHAR               CTL_CODE(PORTTALK_TYPE, 0x904, METHOD_BUFFERED, FILE_ANY_ACCESS)
#define IOCTL_WRITE_PORT_UCHAR              CTL_CODE(PORTTALK_TYPE, 0x905, METHOD_BUFFERED, FILE_ANY_ACCESS)

//---------------------------------------------------------------------------
bool OpenPortTalk(void);
void ClosePortTalk(void);
void outportb(unsigned short int PortAddress, unsigned char byte);
unsigned char inportb(unsigned short int PortAddress);
bool InstallPortTalkDriver(void);
bool StartPortTalkDriver(void);

//---------------------------------------------------------------------------
HANDLE PortTalk_Handle;         //Handle for PortTalk Driver

void outportb(unsigned short int PortAddress, unsigned char byte)
{
    unsigned int error;
    DWORD BytesReturned;
    unsigned char Buffer[3];
    unsigned short * pBuffer;
    pBuffer = (unsigned short *)&Buffer[0];
    *pBuffer = PortAddress;
    Buffer[2] = byte;

    error = DeviceIoControl(PortTalk_Handle,IOCTL_WRITE_PORT_UCHAR,&Buffer,3,NULL,0,&BytesReturned,NULL);
    if(!error)
        ShowMessage("Error occured during outportb while talking to PortTalk driver");
}

unsigned char inportb(unsigned short int PortAddress)
{
    unsigned int error;
    DWORD BytesReturned;
    unsigned char Buffer[3];
    unsigned short * pBuffer;
    pBuffer = (unsigned short *)&Buffer;
    *pBuffer = PortAddress;

    error = DeviceIoControl(PortTalk_Handle,IOCTL_READ_PORT_UCHAR,&Buffer,2,&Buffer,1,&BytesReturned,NULL);
    if(!error)
        ShowMessage("Error occured during inportb while talking to PortTalk driver");

    return(Buffer[0]);
}

bool OpenPortTalk(void)
{
    PortTalk_Handle = CreateFile("\\\\.\\PortTalk",GENERIC_READ,0,NULL,OPEN_EXISTING,FILE_ATTRIBUTE_NORMAL,NULL);
    if(PortTalk_Handle == INVALID_HANDLE_VALUE)
    {
        StartPortTalkDriver();
        PortTalk_Handle = CreateFile("\\\\.\\PortTalk",GENERIC_READ,0,NULL,OPEN_EXISTING,FILE_ATTRIBUTE_NORMAL,NULL);
        if(PortTalk_Handle == INVALID_HANDLE_VALUE)
            return false;
    }
    return true;
}

void ClosePortTalk(void)
{
    CloseHandle(PortTalk_Handle);
}

bool StartPortTalkDriver(void)
{
    SC_HANDLE  SchSCManager;
    SC_HANDLE  schService;
    BOOL       ret;
    DWORD      err;

    SchSCManager = OpenSCManager (NULL,NULL,SC_MANAGER_ALL_ACCESS);
    if(SchSCManager == NULL)
    {
        if(GetLastError() == ERROR_ACCESS_DENIED)
            ShowMessage("安装驱动PortTalk.sys，需要管理员的权限！");
        return false;
    }

    do{
        schService = OpenService(SchSCManager,"PortTalk",SERVICE_ALL_ACCESS);
        if (schService == NULL)
        {
            switch(GetLastError())
            {
                case ERROR_ACCESS_DENIED:
                    return false;
                case ERROR_INVALID_NAME:
                    return false;
                case ERROR_SERVICE_DOES_NOT_EXIST:
                     InstallPortTalkDriver();
                     break;
            }
        }
    }while (schService == NULL);

    ret = StartService(schService,0,NULL);
    if(ret == NULL)    return false;
    CloseServiceHandle (schService);
    return true;
}

bool InstallPortTalkDriver(void)
{
    SC_HANDLE  SchSCManager;
    SC_HANDLE  schService;
    DWORD      err;
    CHAR       DriverFileName[80];

    GetSystemDirectory(DriverFileName, 55);
    lstrcat(DriverFileName,"\\Drivers\\PortTalk.sys");

    if(!CopyFile("PortTalk.sys", DriverFileName, FALSE))
        return false;
    SchSCManager = OpenSCManager (NULL,NULL,SC_MANAGER_ALL_ACCESS);
    schService = CreateService (SchSCManager,"PortTalk","PortTalk",SERVICE_ALL_ACCESS,SERVICE_KERNEL_DRIVER,SERVICE_DEMAND_START,SERVICE_ERROR_NORMAL,"System32\\Drivers\\PortTalk.sys",NULL,NULL,NULL,NULL,NULL);

    if(schService == NULL)
        return false;
    CloseServiceHandle (schService);
    return true;
}
//---------------------------------------------------------------------------
#endif

Originally posted by leafmavis at 2011-05-07 12:02:22:
用你编的头文件，现在的情况如下。请继续帮忙看下，谢谢

<e:\work\vc\learn1\fang1\porttalk.h(88) : error C2065: 'SC_HANDLE' : undeclared identifier
e:\work\vc\learn1\fang1\porttalk.h(88) : er ...

Originally posted by leafmavis at 2011-05-07 14:06:17:
只有两个了


--------------------Configuration: fang1 - Win32 Debug--------------------
Compiling...
fang1Dlg.cpp
e:\work\vc\learn1\fang1\porttalk.h(92) : warning C4101: 'err' : unrefere ...