NAME
        GetKey -- returns the currently pressed rawkey code and qualifiers.
                  (V40)

   SYNOPSIS
        key = GetKey();
        D0

        ULONG GetKey(VOID);

   FUNCTION
        This function returns the currently pressed non-qualifier key and
        all pressed qualifiers.

        This function is safe within an interrupt.

        This is a low level function that does not fit the normal Amiga
        multitasking model. The values returned by this function are
        not modified by which window/screen currently has input focus.

   RESULT
        key - key code for the last non-qualifier key pressed in the low
              order word. If no key is pressed this word will be FF. The
              upper order word contains the qualifiers which can be found
              within the long word as follows:
                        Qualifier               Key
                        LLKB_LSHIFT             Left Shift
                        LLKB_RSHIFT             Rigt Shift
                        LLKB_CAPSLOCK           Caps lock
                        LLKB_CONTROL            Control
                        LLKB_LALT               Left Alt
                        LLKB_RALT               Right Alt
                        LLKB_LAMIGA             Left Amiga
                        LLKB_RAMIGA             Right Amiga

   SEE ALSO
        <libraries/lowlevel.h>