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key_shifts(3)                   Allegro manual                   key_shifts(3)


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

Allegro                          version 4.4.2                   key_shifts(3)

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