How to set folder permissions in C++ for Vista

Burhan, one of our customers requested this and here it is:

const char* g_strFSXPath = "g:\fsx";

void SetPathPermissions(const char* path)
{
// Set permissions for the folder
PACL pDacl,pNewDACL;
EXPLICIT_ACCESS ExplicitAccess;
PSECURITY_DESCRIPTOR ppSecurityDescriptor;
PSID psid;

// Get the current Security Info for the path
char szFileName[MAX_PATH];
sprintf(szFileName, "%s%s", g_strFSXPath, path);
GetNamedSecurityInfo(szFileName, SE_FILE_OBJECT,DACL_SECURITY_INFORMATION, NULL, NULL, &pDacl, NULL, &ppSecurityDescriptor);

//BuildExplicitAccessWithName(&ExplicitAccess, "Users", GENERIC_WRITE, SET_ACCESS, CONTAINER_INHERIT_ACE | OBJECT_INHERIT_ACE);

ConvertStringSidToSid("S-1-5-32-545", &psid);

ExplicitAccess.grfAccessMode = SET_ACCESS;
ExplicitAccess.grfAccessPermissions = GENERIC_WRITE;
ExplicitAccess.grfInheritance = CONTAINER_INHERIT_ACE | OBJECT_INHERIT_ACE;
ExplicitAccess.Trustee.MultipleTrusteeOperation = NO_MULTIPLE_TRUSTEE;
ExplicitAccess.Trustee.pMultipleTrustee = NULL;
ExplicitAccess.Trustee.ptstrName = (LPTSTR) psid;
ExplicitAccess.Trustee.TrusteeForm = TRUSTEE_IS_SID;
ExplicitAccess.Trustee.TrusteeType = TRUSTEE_IS_UNKNOWN;

SetEntriesInAcl(1, &ExplicitAccess, pDacl, &pNewDACL);
SetNamedSecurityInfo(szFileName,SE_FILE_OBJECT,DACL_SECURITY_INFORMATION,NULL,NULL,pNewDACL,NULL);

LocalFree(pNewDACL);
LocalFree(psid);

fileOut << endl;
fileOut << "User reset folder and Subfolders permissions." << endl;
fileOut.flush();

}