制作mfc程序怎么实现获取usb设备的pid和vid

[Vladimirr]

最好说的详细一点，新人，刚接触mfc。

[三岁、就很帅]

http://blog.csdn.net/shen_001/article/details/14448287

[三岁、就很帅]

http://www.codeproject.com/KB/system/HwDetect.aspx http://www.cnblogs.com/SunYu/archive/2010/04/29/1723977.html

[zgl7903]

WDK 中有 USBView 源码可参考

[假装取了个名字]

CMyDlg * p = (CMyDlg *)pParam; //获取主窗口的指针，用来调用主窗口的变量和函数

		int ret1 = 0,ret2 = 0,ret3 = 0;

		PVOID buf = malloc(100);
		char * buf1 = (char *)malloc(100);

		PVOID buf2 = malloc(100);
		char * buf3 = (char *)malloc(100);

		PVOID buf4 = malloc(100);
		char * buf5 = (char *)malloc(100);

		int num = 0;
		int num1 = 0;
		int num2 = 0;

		PHIDD_ATTRIBUTES a;

		int Count = 0; //Total number of devices found
		DWORD strSize=0,requiredSize=0;
		BOOL result1,result2;

		//定义一些变量，以后会用到
		SP_DEVINFO_DATA DeviceInfoData;
		SP_DEVICE_INTERFACE_DATA  DeviceInterfaceData;
		PSP_DEVICE_INTERFACE_DETAIL_DATA DeviceInterfaceDetailData;
		
		
		//第一步：获取deviceID
		GUID deviceId;
		HidD_GetHidGuid(&deviceId);
		

		//第二步：获取设备信息
		HDEVINFO handle;
		handle = SetupDiGetClassDevs(&deviceId, NULL, NULL, (DIGCF_DEVICEINTERFACE | DIGCF_PRESENT)); //Get only HID devices


		//第三步：对所有的设备进行枚举

		result1=false; //定义一些变量
		result2=false;
		//CString temp11="";
		while(1)
		{
  
			DeviceInterfaceData.cbSize = sizeof(SP_DEVICE_INTERFACE_DATA);
			result1 = SetupDiEnumDeviceInterfaces(
							handle,
							NULL, // IN PSP_DEVINFO_DATA  DeviceInfoData,  OPTIONAL
							&deviceId,
							Count,
							&DeviceInterfaceData
							 );   
			if(result1 == FALSE)
			{
				break;
			}

		   //获得设备详细数据（初步）
			result1 = SetupDiGetDeviceInterfaceDetail(handle,
			  &DeviceInterfaceData,
			  NULL,
			  0,
			  &strSize,
			  NULL);
			requiredSize=strSize;
			DeviceInterfaceDetailData=(PSP_DEVICE_INTERFACE_DETAIL_DATA)malloc(requiredSize);
			DeviceInterfaceDetailData->cbSize=sizeof(SP_DEVICE_INTERFACE_DETAIL_DATA);
			DeviceInfoData.cbSize=sizeof(SP_DEVINFO_DATA);

			//再次获得详细数据
			SetupDiGetDeviceInterfaceDetail(handle,
				&DeviceInterfaceData,
				DeviceInterfaceDetailData,
				strSize,
				&requiredSize,
				&DeviceInfoData);

			//获得设备路径（最重要的部分）
			//m_zf1=DeviceInterfaceDetailData->DevicePath;
			Count++;
		} 
		if(Count != 0)
		{
			//AfxMessageBox("进来了");
			a = (PHIDD_ATTRIBUTES)malloc(100);
			a->Size = sizeof(struct _HIDD_ATTRIBUTES);
			
			HANDLE hCom = CreateFile(DeviceInterfaceDetailData->DevicePath,
				NULL,//GENERIC_READ | GENERIC_WRITE,
				FILE_SHARE_READ | FILE_SHARE_WRITE,
				NULL,
				OPEN_EXISTING,
				FILE_FLAG_OVERLAPPED,
				NULL);

			
			HidD_GetAttributes(hCom,a);
			pid = a->ProductID;
			vid = a->VendorID;