Qt-USB-HID通信，可与多个相同的PID，VID设备轮训通信

/******************************************************* HIDAPI - Multi-Platform library for communication with HID devices. Alan Ott Signal 11 Software 8/22/2009 Copyright 2009, All Rights Reserved. At the discretion of the user of this library, this software may be licensed under the terms of the GNU General Public License v3, a BSD-Style license, or the original HIDAPI license as outlined in the LICENSE.txt, LICENSE-gpl3.txt, LICENSE-bsd.txt, and LICENSE-orig.txt files located at the root of the source distribution. These files may also be found in the public source code repository located at: http://github.com/signal11/hidapi . ********************************************************/ #include <windows.h> #ifndef _NTDEF_ typedef LONG NTSTATUS; #endif #ifdef __MINGW32__ #include <ntdef.h> #include <winbase.h> #endif #ifdef __CYGWIN__ #include <ntdef.h> #define _wcsdup wcsdup #endif /* The maximum number of characters that can be passed into the HidD_Get*String() functions without it failing.*/ #define MAX_STRING_WCHARS 0xFFF /*#define HIDAPI_USE_DDK*/ #ifdef __cplusplus extern "C" { #endif #include <setupapi.h> #include <winioctl.h> #ifdef HIDAPI_USE_DDK #include <hidsdi.h> #endif /* Copied from inc/ddk/hidclass.h, part of the Windows DDK. */ #define HID_OUT_CTL_CODE(id) \ CTL_CODE(FILE_DEVICE_KEYBOARD, (id), METHOD_OUT_DIRECT, FILE_ANY_ACCESS) #define IOCTL_HID_GET_FEATURE HID_OUT_CTL_CODE(100) #ifdef __cplusplus } /* extern "C" */ #endif #include <stdio.h> #include <stdlib.h> #include "hidapi.h" #undef MIN #define MIN(x,y) ((x) < (y)? (x): (y)) #ifdef _MSC_VER /* Thanks Microsoft, but I know how to use strncpy(). */ #pragma warning(disable:4996) #endif #ifdef __cplusplus extern "C" { #endif #ifndef HIDAPI_USE_DDK /* Since we're not building with the DDK, and the HID header files aren't part of the SDK, we have to define all this stuff here. In lookup_functions(), the function pointers defined below are set. */ typedef struct _HIDD_ATTRIBUTES{ ULONG Size; USHORT VendorID; USHORT ProductID; USHORT VersionNumber; } HIDD_ATTRIBUTES, *PHIDD_ATTRIBUTES; typedef USHORT USAGE; typedef struct _HIDP_CAPS { USAGE Usage; USAGE UsagePage; USHORT InputReportByteLength; USHORT OutputReportByteLength; USHORT FeatureReportByteLength; USHORT Reserved[17]; USHORT fields_not_used_by_hidapi[10]; } HIDP_CAPS, *PHIDP_CAPS; typedef void* PHIDP_PREPARSED_DATA; #define HIDP_STATUS_SUCCESS 0x110000 typedef BOOLEAN (__stdcall *HidD_GetAttributes_)(HANDLE device, PHIDD_ATTRIBUTES attrib); typedef BOOLEAN (__stdcall *HidD_GetSerialNumberString_)(HANDLE device, PVOID buffer, ULONG buffer_len); typedef BOOLEAN (__stdcall *HidD_GetManufacturerString_)(HANDLE handle, PVOID buffer, ULONG buffer_len); typedef BOOLEAN (__stdcall *HidD_GetProductString_)(HANDLE handle, PVOID buffer, ULONG buffer_len); typedef BOOLEAN (__stdcall *HidD_SetFeature_)(HANDLE handle, PVOID data, ULONG length); typedef BOOLEAN (__stdcall *HidD_GetFeature_)(HANDLE handle, PVOID data, ULONG length); typedef BOOLEAN (__stdcall *HidD_GetIndexedString_)(HANDLE handle, ULONG string_index, PVOID buffer, ULONG buffer_len); typedef BOOLEAN (__stdcall *HidD_GetPreparsedData_)(HANDLE handle, PHIDP_PREPARSED_DATA *preparsed_data); typedef BOOLEAN (__stdcall *HidD_FreePreparsedData_)(PHIDP_PREPARSED_DATA preparsed_data); typedef NTSTATUS (__stdcall *HidP_GetCaps_)(PHIDP_PREPARSED_DATA preparsed_data, HIDP_CAPS *caps); typedef BOOLEAN (__stdcall *HidD_SetNumInputBuffers_)(HANDLE handle, ULONG number_buffers); static HidD_GetAttributes_ HidD_GetAttributes; static HidD_GetSerialNumberString_ HidD_GetSerialNumberString; static HidD_GetManufacturerString_ HidD_GetManufacturerString; static HidD_GetProductString_ HidD_GetProductString; static HidD_SetFeature_ HidD_SetFeature; static HidD_GetFeature_ HidD_GetFeature; static HidD_GetIndexedString_ HidD_GetIndexedString; static HidD_GetPreparsedData_ HidD_GetPreparsedData; static HidD_FreePreparsedData_ HidD_FreePreparsedData; static HidP_GetCaps_ HidP_GetCaps; static HidD_SetNumInputBuffers_ HidD_SetNumInputBuffers; static HMODULE lib_handle = NULL; static BOOLEAN initialized = FALSE; #endif /* HIDAPI_USE_DDK */ struct hid_device_ { HANDLE device_handle; BOOL blocking; USHORT output_report_length; size_t input_report_length; void *last_error_str; DWORD last_error_num; BOOL read_pending; char *read_buf; OVERLAPPED ol; }; static hid_device *new_hid_device() { hid_device *dev = (hid_device*) calloc(1, sizeof(hid_device)); dev->device_handle = INVALID_HANDLE_VALUE; dev->blocking = TRUE; dev->output_report_length = 0; dev->input_report_length = 0; dev->last_error_str = NULL; dev->last_error_num = 0; dev->read_pending = FALSE; dev->read_buf = NULL; memset(&dev->ol, 0, sizeof(dev->ol)); dev->ol.hEvent = CreateEvent(NULL, FALSE, FALSE /*initial state f=nonsignaled*/, NULL); return dev; } static void free_hid_device(hid_device *dev) { CloseHandle(dev->ol.hEvent); CloseHandle(dev->device_handle); LocalFree(dev->last_error_str); free(dev->read_buf); free(dev); } static void register_error(hid_device *device, const char *op) { WCHAR *ptr, *msg; FormatMessageW(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, NULL, GetLastError(), MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), (LPVOID)&msg, 0/*sz*/, NULL); /* Get rid of the CR and LF that FormatMessage() sticks at the end of the message. Thanks Microsoft! */ ptr = msg; while (*ptr) { if (*ptr == '\r') { *ptr = 0x0000; break; } ptr++; } /* Store the message off in the Device entry so that the hid_error() function can pick it up. */ LocalFree(device->last_error_str); device->last_error_str = msg; } #ifndef HIDAPI_USE_DDK static int lookup_functions() { lib_handle = LoadLibraryA("hid.dll"); if (lib_handle) { #define RESOLVE(x) x = (x##_)GetProcAddress(lib_handle, #x); if (!x) return -1; RESOLVE(HidD_GetAttributes); RESOLVE(HidD_GetSerialNumberString); RESOLVE(HidD_GetManufacturerString); RESOLVE(HidD_GetProductString); RESOLVE(HidD_SetFeature); RESOLVE(HidD_GetFeature); RESOLVE(HidD_GetIndexedString); RESOLVE(HidD_GetPreparsedData); RESOLVE(HidD_FreePreparsedData); RESOLVE(HidP_GetCaps); RESOLVE(HidD_SetNumInputBuffers); #undef RESOLVE } else return -1; return 0; } #endif static HANDLE open_device(const char *path, BOOL enumerate) { HANDLE handle; DWORD desired_access = (enumerate)? 0: (GENERIC_WRITE | GENERIC_READ); DWORD share_mode = FILE_SHARE_READ|FILE_SHARE_WRITE; handle = CreateFileA(path, desired_access, share_mode, NULL, OPEN_EXISTING, FILE_FLAG_OVERLAPPED,/*FILE_ATTRIBUTE_NORMAL,*/ 0); return handle; } int HID_API_EXPORT hid_init(void) { #ifndef HIDAPI_USE_DDK if (!initialized) { if (lookup_functions() < 0) { hid_exit(); return -1; } initialized = TRUE; } #endif return 0; } int HID_API_EXPORT hid_exit(void) { #ifndef HIDAPI_USE_DDK if (lib_handle) FreeLibrary(lib_handle); lib_handle = NULL; initialized = FALSE; #endif return 0; } struct hid_device_info HID_API_EXPORT * HID_API_CALL hid_enumerate(unsigned short vendor_id, unsigned short product_id) { BOOL res; struct hid_device_info *root = NULL; /* return object */ struct hid_device_info *cur_dev = NULL; /* Windows objects for interacting with the driver. */ GUID InterfaceClassGuid = {0x4d1e55b2, 0xf16f, 0x11cf, {0x88, 0xcb, 0x00, 0x11, 0x11, 0x00, 0x00, 0x30} }; SP_DEVINFO_DATA devinfo_data; SP_DEVICE_INTERFACE_DATA device_interface_data; SP_DEVICE_INTERFACE_DETAIL_DATA_A *device_interface_detail_data = NULL; HDEVINFO device_info_set = INVALID_HANDLE_VALUE; int device_index = 0; int i; if (hid_init() < 0) return NULL; /* Initialize the Windows objects. */ memset(&devinfo_data, 0x0, sizeof(devinfo_data)); devinfo_data.cb