(Vw32_phantom_key_code): New variable.
(Qhyper, Qsuper, Qmeta, Qalt, Qctrl, Qcontrol, Qshift): New variables. (syms_of_w32fns): Init and register them. (reset_modifiers): Use a more precise test for whether Emacs has keyboard focus. Synchronize state of all keys that can be used as modifiers, to overcome problems arising from hot-keys. (w32_key_to_modifier): Be careful not to call intern() to avoid requiring thread synchronization. (w32_msg_pump): Handle new WM_EMACS_TOGGLE_LOCK_KEY message. (w32_wnd_proc): Ensure lock key indicator lights are updated promptly on Windows 9x, by passing key events on to the system. (w32_wnd_proc): Use Vw32_phantom_key_code to stop system responding to Windows key events when not wanted. (w32_wnd_proc): Undo the mapping of Ctrl-Pause into cancel and Ctrl-NumLock into pause by the system. (w32_wnd_proc): Don't translate key combinations containing any modifiers other than shift (and capslock). (w32_wnd_proc): Reset modifier key states when receiving focus (we can't determine the key states until we have keyboard focus). (Fw32_toggle_lock_key): New function. (syms_of_w32fns): Defsubr it.
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