module Sdlkey: sig .. end
Keyboard handling and key symbols
Keysyms 
type 
| | | KEY_UNKNOWN | 
| | | KEY_BACKSPACE | 
| | | KEY_TAB | 
| | | KEY_CLEAR | 
| | | KEY_RETURN | 
| | | KEY_PAUSE | 
| | | KEY_ESCAPE | 
| | | KEY_SPACE | 
| | | KEY_EXCLAIM | 
| | | KEY_QUOTEDBL | 
| | | KEY_HASH | 
| | | KEY_DOLLAR | 
| | | KEY_AMPERSAND | 
| | | KEY_QUOTE | 
| | | KEY_LEFTPAREN | 
| | | KEY_RIGHTPAREN | 
| | | KEY_ASTERISK | 
| | | KEY_PLUS | 
| | | KEY_COMMA | 
| | | KEY_MINUS | 
| | | KEY_PERIOD | 
| | | KEY_SLASH | 
| | | KEY_0 | 
| | | KEY_1 | 
| | | KEY_2 | 
| | | KEY_3 | 
| | | KEY_4 | 
| | | KEY_5 | 
| | | KEY_6 | 
| | | KEY_7 | 
| | | KEY_8 | 
| | | KEY_9 | 
| | | KEY_COLON | 
| | | KEY_SEMICOLON | 
| | | KEY_LESS | 
| | | KEY_EQUALS | 
| | | KEY_GREATER | 
| | | KEY_QUESTION | 
| | | KEY_AT | 
| | | KEY_LEFTBRACKET | 
| | | KEY_BACKSLASH | 
| | | KEY_RIGHTBRACKET | 
| | | KEY_CARET | 
| | | KEY_UNDERSCORE | 
| | | KEY_BACKQUOTE | 
| | | KEY_a | 
| | | KEY_b | 
| | | KEY_c | 
| | | KEY_d | 
| | | KEY_e | 
| | | KEY_f | 
| | | KEY_g | 
| | | KEY_h | 
| | | KEY_i | 
| | | KEY_j | 
| | | KEY_k | 
| | | KEY_l | 
| | | KEY_m | 
| | | KEY_n | 
| | | KEY_o | 
| | | KEY_p | 
| | | KEY_q | 
| | | KEY_r | 
| | | KEY_s | 
| | | KEY_t | 
| | | KEY_u | 
| | | KEY_v | 
| | | KEY_w | 
| | | KEY_x | 
| | | KEY_y | 
| | | KEY_z | 
| | | KEY_DELETE | 
| | | KEY_WORLD_0 | 
| | | KEY_WORLD_1 | 
| | | KEY_WORLD_2 | 
| | | KEY_WORLD_3 | 
| | | KEY_WORLD_4 | 
| | | KEY_WORLD_5 | 
| | | KEY_WORLD_6 | 
| | | KEY_WORLD_7 | 
| | | KEY_WORLD_8 | 
| | | KEY_WORLD_9 | 
| | | KEY_WORLD_10 | 
| | | KEY_WORLD_11 | 
| | | KEY_WORLD_12 | 
| | | KEY_WORLD_13 | 
| | | KEY_WORLD_14 | 
| | | KEY_WORLD_15 | 
| | | KEY_WORLD_16 | 
| | | KEY_WORLD_17 | 
| | | KEY_WORLD_18 | 
| | | KEY_WORLD_19 | 
| | | KEY_WORLD_20 | 
| | | KEY_WORLD_21 | 
| | | KEY_WORLD_22 | 
| | | KEY_WORLD_23 | 
| | | KEY_WORLD_24 | 
| | | KEY_WORLD_25 | 
| | | KEY_WORLD_26 | 
| | | KEY_WORLD_27 | 
| | | KEY_WORLD_28 | 
| | | KEY_WORLD_29 | 
| | | KEY_WORLD_30 | 
| | | KEY_WORLD_31 | 
| | | KEY_WORLD_32 | 
| | | KEY_WORLD_33 | 
| | | KEY_WORLD_34 | 
| | | KEY_WORLD_35 | 
| | | KEY_WORLD_36 | 
| | | KEY_WORLD_37 | 
| | | KEY_WORLD_38 | 
| | | KEY_WORLD_39 | 
| | | KEY_WORLD_40 | 
| | | KEY_WORLD_41 | 
| | | KEY_WORLD_42 | 
| | | KEY_WORLD_43 | 
| | | KEY_WORLD_44 | 
| | | KEY_WORLD_45 | 
| | | KEY_WORLD_46 | 
| | | KEY_WORLD_47 | 
| | | KEY_WORLD_48 | 
| | | KEY_WORLD_49 | 
| | | KEY_WORLD_50 | 
| | | KEY_WORLD_51 | 
| | | KEY_WORLD_52 | 
| | | KEY_WORLD_53 | 
| | | KEY_WORLD_54 | 
| | | KEY_WORLD_55 | 
| | | KEY_WORLD_56 | 
| | | KEY_WORLD_57 | 
| | | KEY_WORLD_58 | 
| | | KEY_WORLD_59 | 
| | | KEY_WORLD_60 | 
| | | KEY_WORLD_61 | 
| | | KEY_WORLD_62 | 
| | | KEY_WORLD_63 | 
| | | KEY_WORLD_64 | 
| | | KEY_WORLD_65 | 
| | | KEY_WORLD_66 | 
| | | KEY_WORLD_67 | 
| | | KEY_WORLD_68 | 
| | | KEY_WORLD_69 | 
| | | KEY_WORLD_70 | 
| | | KEY_WORLD_71 | 
| | | KEY_WORLD_72 | 
| | | KEY_WORLD_73 | 
| | | KEY_WORLD_74 | 
| | | KEY_WORLD_75 | 
| | | KEY_WORLD_76 | 
| | | KEY_WORLD_77 | 
| | | KEY_WORLD_78 | 
| | | KEY_WORLD_79 | 
| | | KEY_WORLD_80 | 
| | | KEY_WORLD_81 | 
| | | KEY_WORLD_82 | 
| | | KEY_WORLD_83 | 
| | | KEY_WORLD_84 | 
| | | KEY_WORLD_85 | 
| | | KEY_WORLD_86 | 
| | | KEY_WORLD_87 | 
| | | KEY_WORLD_88 | 
| | | KEY_WORLD_89 | 
| | | KEY_WORLD_90 | 
| | | KEY_WORLD_91 | 
| | | KEY_WORLD_92 | 
| | | KEY_WORLD_93 | 
| | | KEY_WORLD_94 | 
| | | KEY_WORLD_95 | 
| | | KEY_KP0 | 
| | | KEY_KP1 | 
| | | KEY_KP2 | 
| | | KEY_KP3 | 
| | | KEY_KP4 | 
| | | KEY_KP5 | 
| | | KEY_KP6 | 
| | | KEY_KP7 | 
| | | KEY_KP8 | 
| | | KEY_KP9 | 
| | | KEY_KP_PERIOD | 
| | | KEY_KP_DIVIDE | 
| | | KEY_KP_MULTIPLY | 
| | | KEY_KP_MINUS | 
| | | KEY_KP_PLUS | 
| | | KEY_KP_ENTER | 
| | | KEY_KP_EQUALS | 
| | | KEY_UP | 
| | | KEY_DOWN | 
| | | KEY_RIGHT | 
| | | KEY_LEFT | 
| | | KEY_INSERT | 
| | | KEY_HOME | 
| | | KEY_END | 
| | | KEY_PAGEUP | 
| | | KEY_PAGEDOWN | 
| | | KEY_F1 | 
| | | KEY_F2 | 
| | | KEY_F3 | 
| | | KEY_F4 | 
| | | KEY_F5 | 
| | | KEY_F6 | 
| | | KEY_F7 | 
| | | KEY_F8 | 
| | | KEY_F9 | 
| | | KEY_F10 | 
| | | KEY_F11 | 
| | | KEY_F12 | 
| | | KEY_F13 | 
| | | KEY_F14 | 
| | | KEY_F15 | 
| | | KEY_NUMLOCK | 
| | | KEY_CAPSLOCK | 
| | | KEY_SCROLLOCK | 
| | | KEY_RSHIFT | 
| | | KEY_LSHIFT | 
| | | KEY_RCTRL | 
| | | KEY_LCTRL | 
| | | KEY_RALT | 
| | | KEY_LALT | 
| | | KEY_RMETA | 
| | | KEY_LMETA | 
| | | KEY_LSUPER | 
| | | KEY_RSUPER | 
| | | KEY_MODE | 
| | | KEY_COMPOSE | 
| | | KEY_HELP | 
| | | KEY_PRINT | 
| | | KEY_SYSREQ | 
| | | KEY_BREAK | 
| | | KEY_MENU | 
| | | KEY_POWER | 
| | | KEY_EURO | 
| | | KEY_UNDO | 
Concrete type describing keyboard keys ("keysym")
val int_of_key : t -> int
get the SDL keysym of the key
val key_of_int : int -> t
get the key corresponding to a SDL keysym
Raises Invalid_arg if not a valid SDL keysym
val char_of_key : t -> char
Returns a (iso-8859-1) character corresponding to a key
Raises Invalid_arg if corresponding SDL keysym is > 255
val num_keys : int
number of keys in the Sdlkey.t variant type : should be 232
val max_code : int
highest SDL keysym : should be 322
val name : t -> string
Returns a short string describing the key
Keyboard handling 
val enable_unicode : bool -> unit
Enable unicode translation of keysyms for keyboard events
val query_unicode : unit -> bool
val disable_key_repeat : unit -> unit
Disable keyboard repeat
val enable_key_repeat : ?delay:int -> ?interval:int -> unit -> unit
Enable keyboard repeat
delay : initial delay in ms between the time when a key is
   pressed, and keyboard repeat begins
interval : the time in ms between keyboard repeat events
val get_key_state : unit ->
       (int, Bigarray.int8_unsigned_elt, Bigarray.c_layout) Bigarray.Array1.t
Get a snapshot of the current state of the keyboard.
Returns an array of keystates, indexed by the SDL keysyms 
   (cf 
Sdlkey.int_of_key)
val is_key_pressed : t -> bool
Checks wether a key is currently pressed on the keyboard.
Key modifiers 
type int 
The following values are flags. Use with land, lor, etc.
val kmod_none : mod_state
val kmod_lshift : mod_state
val kmod_rshift : mod_state
val kmod_lctrl : mod_state
val kmod_rctrl : mod_state
val kmod_lalt : mod_state
val kmod_ralt : mod_state
val kmod_lmeta : mod_state
val kmod_rmeta : mod_state
val kmod_num : mod_state
val kmod_caps : mod_state
val kmod_mode : mod_state
val kmod_ctrl : mod_state
val kmod_shift : mod_state
val kmod_alt : mod_state
val kmod_meta : mod_state
val get_mod_state : unit -> mod_state
Get the current key modifier state
val set_mod_state : mod_state -> unit
Set the current key modifier state
   This does not change the keyboard state, only the key modifier flags.