WM_EMACS_DESTROYWINDOW 3299 src/w32fns.c         M (WM_EMACS_DESTROYWINDOW),
WM_EMACS_DESTROYWINDOW 5439 src/w32fns.c       case WM_EMACS_DESTROYWINDOW:
WM_EMACS_DESTROYWINDOW 4109 src/w32term.c    SendMessageTimeout (FRAME_W32_WINDOW (f), WM_EMACS_DESTROYWINDOW,