Ich habe versucht, es für die letzten 3 Tage zu beheben, und versuchte viele Optionen, aber nicht zur Arbeit zu kommen. Ich habe den folgenden Code in C++.Wie fügt man "% .2X" Daten in Char Array oder String in C (vorzugsweise) oder C++?
#include <winsock2.h>
#include <iphlpapi.h>
#include<stdio.h>
#include <stdlib.h>
#include <typeinfo>
#include <string>
// Link with Iphlpapi.lib
#pragma comment(lib, "IPHLPAPI.lib")
#define _CRT_SECURE_NO_WARNINGS
#define WORKING_BUFFER_SIZE 15000
#define MAX_TRIES 3
#define MALLOC(x) HeapAlloc(GetProcessHeap(), 0, (x))
#define FREE(x) HeapFree(GetProcessHeap(), 0, (x))
/* Note: could also use malloc() and free() */
int __cdecl main(int argc, char **argv)
{
/* Declare and initialize variables */
DWORD dwSize = 0;
DWORD dwRetVal = 0;
unsigned int i = 0;
// Set the flags to pass to GetAdaptersAddresses
ULONG flags = GAA_FLAG_INCLUDE_PREFIX;
// default to unspecified address family (both)
ULONG family = AF_UNSPEC;
LPVOID lpMsgBuf = NULL;
PIP_ADAPTER_ADDRESSES pAddresses = NULL;
ULONG outBufLen = 0;
ULONG Iterations = 0;
PIP_ADAPTER_ADDRESSES pCurrAddresses = NULL;
PIP_ADAPTER_UNICAST_ADDRESS pUnicast = NULL;
PIP_ADAPTER_ANYCAST_ADDRESS pAnycast = NULL;
PIP_ADAPTER_MULTICAST_ADDRESS pMulticast = NULL;
IP_ADAPTER_DNS_SERVER_ADDRESS *pDnServer = NULL;
IP_ADAPTER_PREFIX *pPrefix = NULL;
// Allocate a 15 KB buffer to start with.
outBufLen = WORKING_BUFFER_SIZE;
std::string str;
char Buffer[255];
do {
pAddresses = (IP_ADAPTER_ADDRESSES *)MALLOC(outBufLen);
if (pAddresses == NULL) {
printf
("Memory allocation failed for IP_ADAPTER_ADDRESSES struct\n");
//exit(1);
}
dwRetVal =
GetAdaptersAddresses(family, flags, NULL, pAddresses, &outBufLen);
if (dwRetVal == ERROR_BUFFER_OVERFLOW) {
FREE(pAddresses);
pAddresses = NULL;
}
else {
break;
}
Iterations++;
} while ((dwRetVal == ERROR_BUFFER_OVERFLOW) && (Iterations < MAX_TRIES));
if (dwRetVal == NO_ERROR) {
// If successful, output some information from the data we received
pCurrAddresses = pAddresses;
while (pCurrAddresses) {
if (wcscmp(pCurrAddresses->FriendlyName, L"Ethernet") == 0) {
if (pCurrAddresses->PhysicalAddressLength != 0) {
printf("\tPhysical address: ");
for (i = 0; i < (int)pCurrAddresses- >PhysicalAddressLength;
i++) {
if (i == (pCurrAddresses->PhysicalAddressLength - 1)) {
printf("%.2X\n", (int)pCurrAddresses- >PhysicalAddress[i]);
//str.append(pCurrAddresses- >PhysicalAddress[i]);
// str += (int)pCurrAddresses- >PhysicalAddress[i];
//sprintf(Buffer + strlen(Buffer), "%.2X", (int)pCurrAddresses->PhysicalAddress[i]);
}
else {
printf("%.2X-", (int)pCurrAddresses- >PhysicalAddress[i]);
//str.append(pCurrAddresses- >PhysicalAddress[i]);
//str += (int)pCurrAddresses- >PhysicalAddress[i];
}
}
}
}
pCurrAddresses = pCurrAddresses->Next;
}
}
else {
printf("Call to GetAdaptersAddresses failed with error: %d\n",
dwRetVal);
if (dwRetVal == ERROR_NO_DATA)
printf("\tNo addresses were found for the requested parameters\n");
else {
if (FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER |
FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
NULL, dwRetVal, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
// Default language
(LPTSTR)& lpMsgBuf, 0, NULL)) {
printf("\tError: %s", lpMsgBuf);
LocalFree(lpMsgBuf);
if (pAddresses)
FREE(pAddresses);
//exit(1);
}
}
}
if (pAddresses) {
FREE(pAddresses);
}
MessageBoxA(NULL, str.c_str(), "testx", MB_OK);
system("pause");
return 0;
}
Ich mag die MAC-Adresse in MessageBox (winapi) unter Verwendung von Typ LPCSTR auf einmal, nicht in der Schleife drucken, wie es jetzt mit printf()
geschieht. Ich muss dann die MAC-Adresse in URL senden mit InternetOpenUrl()
, die den Datentyp von LPCSTR oder LPWCSTR hat, werde ich den Rest tun, sobald ich in Mac OS-Adresse in MessageBox
und LPCSTR-Format jeweils zu drucken und speichern.
EDIT: Meine Frage ist: 1. Wie der Wert der Mac-Adresse in Char-Array oder String in Schleife anhängen? 2. Wie speichern Sie die MAC-Adresse in LPCSTR in MessageBox() anzuzeigen?
Was ist Ihre Frage? – immibis
Ein Puffer für die gesamte Zeichenfolge, "snprintf" den aktuellen Wert in einen temporären Puffer und an den Puffer in der Schleife anhängen? –