key_shifts - Online Linux Manual PageSection : 3
Updated : version 4.4.3
Source : Allegro
Note : Allegro manual
NAMEkey_shifts − Bitmask containing the current state of modifier keys. Allegro game programming library.
SYNOPSIS#include <allegro.h> extern volatile int key_shifts;
DESCRIPTIONBitmask 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_FLAGExample: if (key[KEY_W]) {
if (key_shifts & KB_SHIFT_FLAG) {
/* User is pressing shift + W. */
} else {
/* Hmmm... lower case W then. */
}
}
SEE ALSOinstall_keyboard(3), poll_keyboard(3), key(3), excamera(3), exkeys(3) 0
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