Provided by: allegro4-doc_4.4.2-13_all bug

NAME

       key_shifts  -  Bitmask  containing  the  current  state  of  modifier  keys.  Allegro game
       programming library.

SYNOPSIS

       #include <allegro.h>

       extern volatile int key_shifts;

DESCRIPTION

       Bitmask containing the current state of shift/ctrl/alt, the special Windows keys, and  the
       accent escape characters. Wherever possible this value will be updated asynchronously, but
       if keyboard_needs_poll() returns TRUE, you must manually call poll_keyboard() to update it
       with the current input state. This can contain any of the flags:

          KB_SHIFT_FLAG
          KB_CTRL_FLAG
          KB_ALT_FLAG
          KB_LWIN_FLAG
          KB_RWIN_FLAG
          KB_MENU_FLAG
          KB_COMMAND_FLAG
          KB_SCROLOCK_FLAG
          KB_NUMLOCK_FLAG
          KB_CAPSLOCK_FLAG
          KB_INALTSEQ_FLAG
          KB_ACCENT1_FLAG
          KB_ACCENT2_FLAG
          KB_ACCENT3_FLAG
          KB_ACCENT4_FLAG

       Example:

          if (key[KEY_W]) {
             if (key_shifts & KB_SHIFT_FLAG) {
                /* User is pressing shift + W. */
             } else {
                /* Hmmm... lower case W then. */
             }
          }

SEE ALSO

       install_keyboard(3alleg4),    poll_keyboard(3alleg4),   key(3alleg4),   excamera(3alleg4),
       exkeys(3alleg4)