getwindowsproductkey.zip #define UNICODE #include<windows.h> TCHAR szClassName[]=TEXT("Window"); VOID GetProductKey(HWND hEdit) { HKEY hKey; const TCHAR digits[]=TEXT("BCDFGHJKMPQRTVWXY2346789"); TCHAR szProductKey[30]; if(RegOpenKeyEx( HKEY_LOCAL_MACHINE, TEXT("SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion"), 0, KEY_WOW64_64KEY|KEY_QUERY_VALUE, &hKey)==ERROR_SUCCESS) { DWORD dwBufSize=0; if(Reg