CreateToolhelp32Snapshot无法获得system.exe的模块信息
求助！尝试使用toolhelp来获取system的进程信息，能够得到线程信息，但是无法得到模块信息。

先是提示错误，编号5，是权限的问题；然后提权，依然提示错误，编号8，说是堆空间不足的问题。

代码：

#include <windows.h>
#include <tlhelp32.h>
#include <tchar.h>
#include <stdio.h>
#include <stdlib.h>

BOOL   EnableDebugPrivilege(BOOL   fEnable)
{
//   Enabling the debug privilege allows the application to see
//   information   about   service   applications
BOOL   fOk   =   FALSE; //   Assume   function   fails
HANDLE   hToken;

//   Try   to   open   this   process's   access   token
if(OpenProcessToken(GetCurrentProcess(),   TOKEN_ADJUST_PRIVILEGES,   &hToken))
{
//   Attempt   to   modify   the   "Debug"   privilege
TOKEN_PRIVILEGES   tp;
tp.PrivilegeCount   =   1;
LookupPrivilegeValue(NULL,   SE_DEBUG_NAME,   &tp.Privileges[0].Luid);
tp.Privileges[0].Attributes   =   fEnable   ?   SE_PRIVILEGE_ENABLED   :   0;
AdjustTokenPrivileges(hToken,   FALSE,   &tp,   sizeof(tp),   NULL,   NULL);
fOk   =   (GetLastError()   ==   ERROR_SUCCESS);
CloseHandle(hToken);
}
return(fOk);
}

//  Forward declarations:
BOOL ListProcessModules( DWORD dwPID );
BOOL ListProcessThreads( DWORD dwOwnerPID );
void printError( TCHAR* msg );

int main( void )
{
//GetProcessList( );
EnableDebugPrivilege(TRUE);
ListProcessThreads( 4 );
ListProcessModules( 4 );
EnableDebugPrivilege(FALSE);
system("pause");
return 0;
}


BOOL ListProcessModules( DWORD dwPID )
{
HANDLE hModuleSnap = INVALID_HANDLE_VALUE;
MODULEENTRY32 me32;

EnableDebugPrivilege(TRUE);
// Take a snapshot of all modules in the specified process.
hModuleSnap = CreateToolhelp32Snapshot( TH32CS_SNAPMODULE, dwPID );
if( hModuleSnap == INVALID_HANDLE_VALUE )
{
printError( TEXT("CreateToolhelp32Snapshot (of modules)") );
return( FALSE );
}

// Set the size of the structure before using it.
me32.dwSize = sizeof( MODULEENTRY32 );

// Retrieve information about the first module,
// and exit if unsuccessful
if( !Module32First( hModuleSnap, &me32 ) )
{
printError( TEXT("Module32First") );  // show cause of failure
CloseHandle( hModuleSnap );           // clean the snapshot object
return( FALSE );
}

// Now walk the module list of the process, 
 
// and display information about each module
int i=1;
do
{
_tprintf( TEXT("模块%d Base address:0x%08X"), i,(DWORD) me32.modBaseAddr);
_tprintf( TEXT(" Path:%s\n"),     me32.szExePath );
} while( Module32Next( hModuleSnap, &me32 ) );

EnableDebugPrivilege(FALSE);

CloseHandle( hModuleSnap );
return( TRUE );
}

BOOL ListProcessThreads( DWORD dwOwnerPID )
{
HANDLE hThreadSnap = INVALID_HANDLE_VALUE;
THREADENTRY32 te32;

// Take a snapshot of all running threads
hThreadSnap = CreateToolhelp32Snapshot( TH32CS_SNAPTHREAD, 0 );
if( hThreadSnap == INVALID_HANDLE_VALUE )
return( FALSE );

// Fill in the size of the structure before using it.
te32.dwSize = sizeof(THREADENTRY32);

// Retrieve information about the first thread,
// and exit if unsuccessful
if( !Thread32First( hThreadSnap, &te32 ) )
{
printError( TEXT("Thread32First") ); // show cause of failure
CloseHandle( hThreadSnap );          // clean the snapshot object
return( FALSE );
}

// Now walk the thread list of the system,
// and display information about each thread
// associated with the specified process
int i=1;
do
{
if( te32.th32OwnerProcessID == dwOwnerPID )
{
_tprintf( TEXT("线程%d Tid:%d\n"), i++,te32.th32ThreadID );
}
} while( Thread32Next(hThreadSnap, &te32 ) );

CloseHandle( hThreadSnap );

return( TRUE );
}

void printError( TCHAR* msg )
{
DWORD eNum;
TCHAR sysMsg[256];
TCHAR* p;

eNum = GetLastError( );
FormatMessage( FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
NULL, eNum,
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), // Default language
sysMsg, 256, NULL );

// Trim the end of the line and terminate it with a null
p = sysMsg;
while( ( *p > 31 ) || ( *p == 9 ) )
++p;
do { *p-- = 0; } while( ( p >= sysMsg ) &&
( ( *p == '.' ) || ( *p < 33 ) ) );

// Display the message
_tprintf( TEXT("\n  WARNING: %s failed with error %d (%s)\n\n"), msg, eNum, sysMsg );
}

[解决办法]
这个进程的信息需要枚举设备驱动信息得来的，别的进程不一样，用MODULEENTRY得不到的。