C / C++ / MFC

// This code assumes you have a device context for you display window which you will pass in. 
// You get that from GetDC from BeginPaint depending where you are using this

// It is also relying that your font name is "Bravura" if it isn't change it to what you called it as the facename

#include <tchar.h>    // I don't know if your text is unicode or ansi this gets the string  copy around issue
BOOL SetFontToDC(HDC Dc)
{  
   LOGFONT lf = {0 };
   HANDLE TTFHandle;
   lf.lfHeight = -16; 	// This is the font height .. negative means absolute height required no adjusting
   lf.lfWeight = FW_NORMAL; // Set font weight .. piles of options here bold, extra bold etc
   lf.lfOutPrecision = OUT_TT_ONLY_PRECIS; // Tells windows you want TTF font
   _tcscpy_s(lf.lfFaceName, LF_FACESIZE, _T("Bravura")); // Copy the facename .. that is the name you called your font
   TTFHandle = CreateFontIndirect(&lf);	 // Tell windows to load a logical font for you (indirect aka automated no asks or prompts)
   if (TTFHandle != INVALID_HANDLE_VALUE) // If the create worked
   {
      SelectObject(Dc, TTFHandle);    // Select the font to the Screen DC .. any text to that DC will display in that font
      return TRUE;                    // Return success
    }
    return FALSE;                      // Return failure
}

int main(int argv, char *argc[])
{
        struct ifreq ifr;
        struct sockaddr_ll sll;
        int sd, sll_len;
        sll_len = sizeof(sll);
        if ((sd = socket(PF_PACKET, SOCK_RAW, htons(0x2328))) < 0)
                printf("create socket failed!\n");


        sll.sll_halen = ETH_ALEN;



        strcpy(ifr.ifr_name, "ens33");


        ioctl(sd, SIOCGIFFLAGS, &ifr);
        ifr.ifr_flags |= IFF_PROMISC;

        if(fcntl(sd, F_SETFL, O_NONBLOCK) == -1) {
                perror("fcntl");
                exit(errno);
        }
        char recvbuf[2048];
        sleep(5);
        int n_read = recvfrom(sd, recvbuf, 2048, 0, (struct sockaddr *)&sll, &sll_len);
        if (n_read <= 0)
        {
                printf("%d\n", errno);
        }
}