>>286
TCHAR sz[24];
HKEY hk;
if (SUCCEEDED(RegOpenKeyEx(HKEY_LOCAL_MACHINE,
TEXT("SOFTWARE\\Microsoft\\Windows\\CurrentVersion"), 0,
KEY_READ, &hk)))
{
DWORD cb = 24 * sizeof(TCHAR);
if (SUCCEEDED(RegQueryValueEx(hk, TEXT("ProductId"), NULL, NULL,
sz, &cb)))
{
MessageBox(NULL, sz, NULL, 0);
}
}