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HIDAPI 是一個 USB 和藍牙的 hid 類設備在 Windows、Linux、FreeBSD 和 Mac 的 C 語言通用庫，使用 HIDAPI 可以在 Windows、Linux、FreeBSD 和 Mac 平臺進行 USB 和藍牙的 hid 類設備通信，非常簡單實用。

示例代碼：

#include?
#include?
#include?"hidapi.h"
int?main(int?argc,?char*?argv[])
{
int?res;
unsigned?char?buf[65];
#define?MAX_STR?255
wchar_t?wstr[MAX_STR];
hid_device?*handle;
int?i;
//?Enumerate?and?print?the?HID?devices?on?the?system
struct?hid_device_info?*devs,?*cur_dev;
devs?=?hid_enumerate(0x0,?0x0);
cur_dev?=?devs;
while?(cur_dev)?{
printf("Device?Found\n??type:?%04hx?%04hx\n??path:?%s\n??serial_number:?%ls",
cur_dev->vendor_id,?cur_dev->product_id,?cur_dev->path,?cur_dev->serial_number);
printf("\n");
printf("??Manufacturer:?%ls\n",?cur_dev->manufacturer_string);
printf("??Product:??????%ls\n",?cur_dev->product_string);
printf("\n");
cur_dev?=?cur_dev->next;
}
hid_free_enumeration(devs);
//?Open?the?device?using?the?VID,?PID,
//?and?optionally?the?Serial?number.
handle?=?hid_open(0x4d8,?0x3f,?NULL);
//?Read?the?Manufacturer?String
res?=?hid_get_manufacturer_string(handle,?wstr,?MAX_STR);
printf("Manufacturer?String:?%ls\n",?wstr);
//?Read?the?Product?String
res?=?hid_get_product_string(handle,?wstr,?MAX_STR);
printf("Product?String:?%ls\n",?wstr);
//?Read?the?Serial?Number?String
res?=?hid_get_serial_number_string(handle,?wstr,?MAX_STR);
printf("Serial?Number?String:?%ls",?wstr);
printf("\n");
//?Send?a?Feature?Report?to?the?device
buf[0]?=?0x2;?//?First?byte?is?report?number
buf[1]?=?0xa0;
buf[2]?=?0x0a;
res?=?hid_send_feature_report(handle,?buf,?17);
//?Read?a?Feature?Report?from?the?device
buf[0]?=?0x2;
res?=?hid_get_feature_report(handle,?buf,?sizeof(buf));
//?Print?out?the?returned?buffer.
printf("Feature?Report\n???");
for?(i?=?0;?i?
					

						HIDAPI 有四個后端：
					

							

								Windows (using hid.dll)
						
						

							

								Linux/hidraw (using the Kernel's hidraw driver)
						
						

							

								Linux/libusb (using libusb-1.0)
						
						

							

								FreeBSD (using libusb-1.0)
						
						

							

								Mac (using IOHidManager)