HID 程序设计

  

1 环境配置

1.1 安装NTDDK

1.2 设置VC++6.0的配置

工具->选择->目录

1.3 程序引用

#include <windows.h>

 

extern "C" {

#include <hidsdi.h>

#include <hidpi.h>

#include <setupapi.h>

}

 

#pragma comment(lib,"setupapi.lib")

#pragma comment(lib,"hid.lib")

 

不加#include <windows.h>的后果：

c:/program files/microsoft visual studio/vc98/include/rpcndr.h(58) : fatal error C1189: #error : incorrect <rpcndr.h> version. Use the header that matches with the MIDL compiler.

不加extern “C” {}的后果：

编译通过，构造出错，hid.obj : error LNK2001: unresolved external symbol "void __stdcall HidD_GetHidGuid(struct _GUID *)" (?HidD_GetHidGuid@@YGXPAU_GUID@@@Z)

Debug/hid.exe : fatal error LNK1120: 1 unresolved externals

不加#pragma comment(lib,"hid.lib") 的后果：hid.obj : error LNK2001: unresolved external symbol _HidD_GetHidGuid@4

 

 

 

代码

/*名称：GetDevPath

 功能：获取设备路径

 参数：MemberIndex 设备列表的索引，txtpath文本缓存，以字符串保存设备路径

 返回：-2表示结束，-1 表示不能获取GUID，0表示未找到设备，>0表示成功，且返回值为路径字符串长度

*/

int HidDevice::GetDevPath(DWORD MemberIndex,char *txtpath)

{

    int    ret;

    DWORD Length,Required;

   

    //获GUID

    HidD_GetHidGuid(&HidGuid);

    hDevInfo=SetupDiGetClassDevs(&HidGuid,NULL,NULL,DIGCF_PRESENT|DIGCF_INTERFACEDEVICE);

    if (hDevInfo == INVALID_HANDLE_VALUE)

    {

       return -1;

    }

    //枚举设备

    ret=SetupDiEnumDeviceInterfaces(hDevInfo,0,&HidGuid,MemberIndex,&devInfoData);

    if (!ret)

       if(MemberIndex==1)

       {

       // MessageBox(NULL,"未找到任何可用USB设备!",NULL,NULL);

           return 0;

       }

       else

           return -2;

    //获detaildata结构数组的长度

    SetupDiGetDeviceInterfaceDetail(hDevInfo,&devInfoData,NULL,0,&Length,NULL);

    detailData=(PSP_DEVICE_INTERFACE_DETAIL_DATA)malloc(Length);

    detailData->cbSize=sizeof(SP_DEVICE_INTERFACE_DETAIL_DATA);

    //获detailData

    ret=SetupDiGetDeviceInterfaceDetail(hDevInfo,&devInfoData,detailData,Length,&Required,NULL);

    strcpy(txtpath,detailData->DevicePath);

 

    return strlen(txtpath);

}

/*名称：GetProductInfo

 功能：获取usb的hid设备的信息

 参数：vendorid供应商，productid产品id,vernum版本号,manufaturer制造商,产品

 返回：1

*/

int HidDevice::GetProductInfo(char *vendorid,char *productid,char *vernum,char *manufaturer,char *product)

{

    HANDLE        hDeviceHandle;

    HIDD_ATTRIBUTES Attributes;

    WCHAR         mString[256];

 

    hDeviceHandle = CreateFile(detailData->DevicePath ,

                            GENERIC_READ | GENERIC_WRITE,

                            FILE_SHARE_READ | FILE_SHARE_WRITE,

                            NULL,

                            OPEN_EXISTING,

                            0,

                            NULL);

    if(hDeviceHandle == INVALID_HANDLE_VALUE)

       return 0;

    HidD_GetAttributes(hDeviceHandle,&Attributes);

    //将有关该设备的标识显示出来

    sprintf(vendorid,"0x%04X",Attributes.VendorID);

    sprintf(productid,"0x%04X",Attributes.ProductID);

    sprintf(vernum,"0x%04X",Attributes.VersionNumber);

    HidD_GetManufacturerString(hDeviceHandle,mString,sizeof(mString));

    if (wcstombs(manufaturer,mString,256) == -1) // fail

       manufaturer[0] = NULL;

    HidD_GetProductString(hDeviceHandle,mString,sizeof(mString));

    if (wcstombs(product,mString,256) == -1)

           product[0] = NULL;

 

    CloseHandle(hDeviceHandle);

    return 1;

}