Thread: Help! Access violation error in C++

Hi everyone! I'm trying to enumerate registry keys:

Code:

LONG i;
HKEY root; 
DWORD retCode; 
DWORD dwIndex=0;
CHAR achKey[MAX_PATH];
const TCHAR szRegRoot[] = _T("Software\\Microsoft\\Office"); 

retCode=RegOpenKeyEx(HKEY_CURRENT_USER, szRegRoot, 0, KEY_READ, &root); 

for (i = 0, retCode = ERROR_SUCCESS; retCode == ERROR_SUCCESS; i++) 
{    retCode = RegEnumKeyEx(root, 
                     i, 
                     achKey, 
                     (ULONG *)MAX_PATH, 
                     NULL, 
                     NULL, 
                     NULL, 
                     NULL); 
}

When I about to execute RegEnumKeyEx(...) I got the error:
First-chance exception in p5.exe (ADVAPI32.DLL): 0xC0000005: Access Violation.
Enviroment: Win2K, VC++6.0.
Thanks!