message MenuItem

Only read for checkbox.

A greyed row that is still shown, which is the point: "Maximize" missing from a fullscreen window's menu moves every row below it, and a menu whose geometry changes with the window is a menu nobody builds muscle memory for.

What the client echoes back in MenuReply.chosen when this row is picked. Opaque to it, and meaningful only to the compositor that sent it. Never 0 for a row that can be chosen — 0 is how a reply says "dismissed", so an item with that id would be indistinguishable from the user pressing Escape.

Right-aligned accelerator label — "Alt+F4". Cosmetic: the compositor already has these bindings and the menu never matches on this string. Empty for a row with no chord.