Grabbing the HWND/XID in Java 21 and Later
A window handle is an operating system identifier referencing a specific on-screen window. Passing this handle to low-level OS APIs allows applications to manipulate window attributes—such as size, position, and visibility—or bind native drawing surfaces.
On Windows, this handle is an HWND (Handle to a Window); on X11-based Linux/Unix systems, it is an XID (X Window ID) (or an NSView pointer on macOS).
In Java applications involving native video playback, you must often retrieve the nati