Sample Code from terminal28.blogspot.com showing how to write a Qt 5.1.0 application that uses Signal11's HIDAPI library

gistfile1.txt

int main(int argc, char *argv[])
{
    QCoreApplication a(argc, argv);
    qDebug() << "Hi";

    int res;
        unsigned char buf[256];
        #define MAX_STR 255
        wchar_t wstr[MAX_STR];
        hid_device *handle;
        int i;

    #ifdef WIN32
        UNREFERENCED_PARAMETER(argc);
        UNREFERENCED_PARAMETER(argv);
    #endif

        struct hid_device_info *devs, *cur_dev;

        if (hid_init())
            return -1;

        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("  Release:      %hx\n", cur_dev->release_number);
            printf("  Interface:    %d\n",  cur_dev->interface_number);
            printf("\n");
            cur_dev = cur_dev->next;
        }
        hid_free_enumeration(devs);

        // Set up the command buffer.
        memset(buf,0x00,sizeof(buf));
        buf[0] = 0x01;
        buf[1] = 0x81;


        // Open the device using the VID, PID,
        // and optionally the Serial number.
        ////handle = hid_open(0x4d8, 0x3f, L"12345");
        handle = hid_open(0x4d8, 0x3f, NULL);
        if (!handle) {
            printf("unable to open device\n");
            return 1;
        }

        hid_close(handle);

        /* Free static HIDAPI objects. */
        hid_exit();




    return a.exec();
}