获取本地组账号

#include <Windows.h>
#include <lm.h>
#include <assert.h>
#pragma comment(lib, "netapi32.lib")

int _tmain(int argc, _TCHAR* argv[])
{

	LPGROUP_INFO_0  pBuf = NULL;
	LPGROUP_INFO_0  pTmpBuf;
	DWORD dwLevel = 0;
	DWORD dwPrefMaxLen = MAX_PREFERRED_LENGTH;
	DWORD dwEntriesRead = 0;
	DWORD dwTotalEntries = 0;
	DWORD dwResumeHandle = 0;
	DWORD i;
	DWORD dwTotalCount = 0;
	NET_API_STATUS nStatus;
	LPTSTR pszServerName = NULL;


	do // begin do
	{
		nStatus = NetLocalGroupEnum((LPCWSTR)pszServerName,
			dwLevel,
			(LPBYTE*)&pBuf,
			dwPrefMaxLen,
			&dwEntriesRead,
			&dwTotalEntries,
			&dwResumeHandle);
		//
		// If the call succeeds,
		//
		if ((nStatus == NERR_Success) || (nStatus == ERROR_MORE_DATA))
		{
			if ((pTmpBuf = pBuf) != NULL)
			{
				//
				// Loop through the entries.
				//
				for (i = 0; (i < dwEntriesRead); i++)
				{
					assert(pTmpBuf != NULL);

					if (pTmpBuf == NULL)
					{
						fprintf(stderr, "An access violation has occurred\n");
						break;
					}
					//
					//  Print the name of the user account.
					//
					wprintf(L"\t-- %s\n", pTmpBuf->grpi0_name);

					pTmpBuf++;
					dwTotalCount++;
				}
			}
		}
		//
		// Otherwise, print the system error.
		//
		else
			fprintf(stderr, "A system error has occurred: %d\n", nStatus);
		//
		// Free the allocated buffer.
		//
		if (pBuf != NULL)
		{
			NetApiBufferFree(pBuf);
			pBuf = NULL;
		}
	}
	// Continue to call NetUserEnum while 
	//  there are more entries. 
	// 
	while (nStatus == ERROR_MORE_DATA); // end do
	//
	// Check again for allocated memory.
	//
	if (pBuf != NULL)
		NetApiBufferFree(pBuf);
	//
	// Print the final count of users enumerated.
	//
	fprintf(stderr, "\nTotal of %d entries enumerated\n", dwTotalCount);

	return 0;
}