> For the complete documentation index, see [llms.txt](https://www.pinvoke.dev/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://www.pinvoke.dev/debug/image_optional_header_magic.md).

# IMAGE\_OPTIONAL\_HEADER\_MAGIC

```csharp
public enum IMAGE_OPTIONAL_HEADER_MAGIC : ushort
{
    IMAGE_NT_OPTIONAL_HDR_MAGIC = 523,
    IMAGE_NT_OPTIONAL_HDR32_MAGIC = 267,
    IMAGE_NT_OPTIONAL_HDR64_MAGIC = 523,
    IMAGE_ROM_OPTIONAL_HDR_MAGIC = 263,
}
```