type t =
| Vsync_hint
| Fullscreen_mode
| Window_resizable
| Window_undecorated
| Window_hidden
| Window_minimized
| Window_maximized
| Window_unfocused
| Window_topmost
| Window_always_run
| Window_transparent
| Window_highdpi
| Window_mouse_passthrough
| Msaa_4x_hint
| Interlaced_hint
val vals : (t * int64 F.const) list