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135 lines
4 KiB
C
135 lines
4 KiB
C
/*
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SDL - Simple DirectMedia Layer
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Copyright (C) 1997-2009 Sam Lantinga
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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Sam Lantinga
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slouken@libsdl.org
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*/
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/** @file SDL_keyboard.h
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* Include file for SDL keyboard event handling
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*/
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#ifndef _SDL_keyboard_h
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#define _SDL_keyboard_h
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#include "SDL_stdinc.h"
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#include "SDL_error.h"
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#include "SDL_keysym.h"
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#include "begin_code.h"
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/* Set up for C function definitions, even when using C++ */
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#ifdef __cplusplus
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extern "C" {
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#endif
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/** Keysym structure
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*
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* - The scancode is hardware dependent, and should not be used by general
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* applications. If no hardware scancode is available, it will be 0.
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*
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* - The 'unicode' translated character is only available when character
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* translation is enabled by the SDL_EnableUNICODE() API. If non-zero,
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* this is a UNICODE character corresponding to the keypress. If the
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* high 9 bits of the character are 0, then this maps to the equivalent
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* ASCII character:
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* @code
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* char ch;
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* if ( (keysym.unicode & 0xFF80) == 0 ) {
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* ch = keysym.unicode & 0x7F;
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* } else {
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* An international character..
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* }
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* @endcode
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*/
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typedef struct SDL_keysym {
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Uint8 scancode; /**< hardware specific scancode */
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SDLKey sym; /**< SDL virtual keysym */
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SDLMod mod; /**< current key modifiers */
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Uint16 unicode; /**< translated character */
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} SDL_keysym;
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/** This is the mask which refers to all hotkey bindings */
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#define SDL_ALL_HOTKEYS 0xFFFFFFFF
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/* Function prototypes */
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/**
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* Enable/Disable UNICODE translation of keyboard input.
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*
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* This translation has some overhead, so translation defaults off.
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*
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* @param[in] enable
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* If 'enable' is 1, translation is enabled.
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* If 'enable' is 0, translation is disabled.
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* If 'enable' is -1, the translation state is not changed.
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*
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* @return It returns the previous state of keyboard translation.
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*/
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extern DECLSPEC int SDLCALL SDL_EnableUNICODE(int enable);
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#define SDL_DEFAULT_REPEAT_DELAY 500
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#define SDL_DEFAULT_REPEAT_INTERVAL 30
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/**
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* Enable/Disable keyboard repeat. Keyboard repeat defaults to off.
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*
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* @param[in] delay
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* 'delay' is the initial delay in ms between the time when a key is
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* pressed, and keyboard repeat begins.
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*
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* @param[in] interval
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* 'interval' is the time in ms between keyboard repeat events.
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*
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* If 'delay' is set to 0, keyboard repeat is disabled.
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*/
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extern DECLSPEC int SDLCALL SDL_EnableKeyRepeat(int delay, int interval);
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extern DECLSPEC void SDLCALL SDL_GetKeyRepeat(int *delay, int *interval);
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/**
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* Get a snapshot of the current state of the keyboard.
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* Returns an array of keystates, indexed by the SDLK_* syms.
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* Usage:
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* @code
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* Uint8 *keystate = SDL_GetKeyState(NULL);
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* if ( keystate[SDLK_RETURN] ) //... \<RETURN> is pressed.
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* @endcode
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*/
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extern DECLSPEC Uint8 * SDLCALL SDL_GetKeyState(int *numkeys);
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/**
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* Get the current key modifier state
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*/
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extern DECLSPEC SDLMod SDLCALL SDL_GetModState(void);
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/**
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* Set the current key modifier state.
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* This does not change the keyboard state, only the key modifier flags.
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*/
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extern DECLSPEC void SDLCALL SDL_SetModState(SDLMod modstate);
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/**
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* Get the name of an SDL virtual keysym
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*/
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extern DECLSPEC char * SDLCALL SDL_GetKeyName(SDLKey key);
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/* Ends C function definitions when using C++ */
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#ifdef __cplusplus
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}
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#endif
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#include "close_code.h"
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#endif /* _SDL_keyboard_h */
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