与USB HID设备的通信，win32应用程序,VS工程

#include <Windows.h> extern "C" { #include "setupapi.h" #include "hidsdi.h" } #include <string.h> #include <stdlib.h> #include <stdio.h> #define venderID 0x0849 #define productID 0x5250 int WJOpenDevice(HANDLE *handle) { SP_DEVINFO_DATA DeviceInfoData; SP_DEVICE_INTERFACE_DATA DeviceInterfaceData; PSP_DEVICE_INTERFACE_DETAIL_DATA DeviceInterfaceDetailData; int Count = 0; BOOL result1 = false; BOOL result2 = false; DWORD strSize = 0; DWORD requiredSize = 0; char devPath[128]; memset(devPath, 0, sizeof(devPath)); GUID deviceID; HidD_GetHidGuid(&deviceID); HDEVINFO devinfo; devinfo = SetupDiGetClassDevs(&deviceID, NULL, NULL, DIGCF_DEVICEINTERFACE | DIGCF_PRESENT); do { DeviceInterfaceData.cbSize = sizeof(SP_DEVICE_INTERFACE_DATA); result1 = SetupDiEnumDeviceInterfaces(devinfo, NULL, &deviceID, Count, &DeviceInterfaceData); if(result1 == false) { return -1; } SetupDiGetDeviceInterfaceDetail(devinfo, &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); result2 = SetupDiGetDeviceInterfaceDetail(devinfo, &DeviceInterfaceData, DeviceInterfaceDetailData, strSize, &requiredSize, &DeviceInfoData); if(result2 == false) { Count++; continue; } strcpy(devPath, DeviceInterfaceDetailData->DevicePath); HIDD_ATTRIBUTES devAttr; PHIDP_PREPARSED_DATA PreparsedData; HIDP_CAPS Capabilities; *handle = CreateFile(devPath, GENERIC_READ | GENERIC_WRITE, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, 0, NULL); if(*handle == INVALID_HANDLE_VALUE) { Count++; continue; } devAttr.Size = sizeof(HIDD_ATTRIBUTES); if(!HidD_GetAttributes(*handle, &devAttr)) { CloseHandle(*handle); return -2; } if(!HidD_GetPreparsedData(*handle, &PreparsedData)) { CloseHandle(*handle); return -3; } if(!HidP_GetCaps(PreparsedData, &Capabilities)) { CloseHandle(*handle); return -4; } if(devAttr.VendorID == venderID && devAttr.ProductID == productID) { printf("Find the Device!"); //找到你的设备了，该干嘛干嘛吧 return 0; } Count++; }while(result1); return -5; } int main() { HANDLE handle; int ret = WJOpenDevice(&handle); return 0; }