如何得到Windows的所有系统用户名？

MiracleXDraw 2004-06-21 02:52:52

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taianmonkey 2004-06-21

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#ifndef UNICODE
#define UNICODE
#endif

#include <stdio.h>
#include <assert.h>
#include <windows.h>
#include <lm.h>
#pragma comment(lib,"Netapi32.lib")

int wmain(int argc, wchar_t *argv[])
{
LPUSER_INFO_0 pBuf = NULL;
LPUSER_INFO_0 pTmpBuf;
DWORD dwLevel = 0;
DWORD dwPrefMaxLen = -1;
DWORD dwEntriesRead = 0;
DWORD dwTotalEntries = 0;
DWORD dwResumeHandle = 0;
DWORD i;
DWORD dwTotalCount = 0;
NET_API_STATUS nStatus;
LPTSTR pszServerName = NULL;

if (argc > 2)
{
fwprintf(stderr, L"Usage: %s [\\\\ServerName]\n", argv[0]);
exit(1);
}
// The server is not the default local computer.
//
if (argc == 2)
pszServerName = argv[1];
wprintf(L"\nUser account on %s: \n", pszServerName);
//
// Call the NetUserEnum function, specifying level 0;
// enumerate global user account types only.
//
do // begin do
{
nStatus = NetUserEnum(pszServerName,
dwLevel,
FILTER_NORMAL_ACCOUNT, // global users
(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->usri0_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;
}

zkxz 2004-06-21

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GetUsersFromSystemToComboBox这个函数是我自己写的，不是Windows的API，里面用到的NetUserEnum、NetApiBufferFree才是Microsoft的，呵呵！

wenyuzhang168 2004-06-21

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GetUsersFromSystemToComboBox

zkxz 2004-06-21

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参考MSDN也可。

zkxz 2004-06-21

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我以前写过一个函数将用户名加到ComboBox里的，给你参考一下：（只能得到本机所有用户名）

void CSDMADlg::GetUsersFromSystemToComboBox(CComboBox *pCBUsername)
{
LPUSER_INFO_0 pBuf = NULL;
LPUSER_INFO_0 pTmpBuf;
DWORD dwLevel = 0;
DWORD dwPrefMaxLen = -1;
DWORD dwEntriesRead = 0;
DWORD dwTotalEntries = 0;
DWORD dwResumeHandle = 0;
NET_API_STATUS nStatus;
LPTSTR pszServerName = NULL;//(LPTSTR)GetComputername().GetBuffer(MAX_NAME);

nStatus = NetUserEnum((LPCWSTR)pszServerName,
dwLevel,
FILTER_NORMAL_ACCOUNT, // global users
(LPBYTE*)&pBuf,
dwPrefMaxLen,
&dwEntriesRead,
&dwTotalEntries,
&dwResumeHandle);

pCBUsername->Clear();

if((nStatus == NERR_Success) || (nStatus == ERROR_MORE_DATA))
{
if((pTmpBuf=pBuf)!=NULL)
{
for(DWORD i=0;i<dwEntriesRead;++i)
{
pCBUsername->AddString(CString(pTmpBuf->usri0_name));
pTmpBuf++;
}
}
}
else
{
::MessageBox(NULL,"A system error has occurred","ERROR",MB_OK);
}

if(pBuf!=NULL)
{
NetApiBufferFree(pBuf);
pBuf = NULL;
}

while (nStatus == ERROR_MORE_DATA);

if (pBuf != NULL)
NetApiBufferFree(pBuf);
}