| Platform SDK: Debugging and Error Handling | 
The ImageNtHeader function locates the IMAGE_NT_HEADERS structure in a PE image and returns a pointer to the data.
PIMAGE_NT_HEADERS ImageNtHeader( PVOID ImageBase );
If the function succeeds, the return value is a pointer to an IMAGE_NT_HEADERS structure.
If the function fails, the return value is NULL. To retrieve extended error information, call GetLastError.
  Windows NT/2000: Requires Windows NT 4.0 or later.
  Windows 95/98: Requires Windows 95 or later. Available as a redistributable for Windows 95.
  Header: Declared in Dbghelp.h.
  Library: Use Dbghelp.lib.
Debug Help Library Overview, DbgHelp Functions, IMAGE_NT_HEADERS, MapViewOfFile