Linux and UNIX Man Pages

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The Unix time number is zero at the Unix epoch, and increases by exactly 86400 per day since the epoch.
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sdl_getkeystate(3) [opensolaris man page]

SDL_GetKeyState(3)						 SDL API Reference						SDL_GetKeyState(3)

NAME
SDL_GetKeyState - Get a snapshot of the current keyboard state SYNOPSIS
#include "SDL.h" Uint8 *SDL_GetKeyState(int *numkeys); DESCRIPTION
Gets a snapshot of the current keyboard state. The current state is return as a pointer to an array, the size of this array is stored in numkeys. The array is indexed by the SDLK_* symbols. A value of 1 means the key is pressed and a value of 0 means its not. The pointer returned is a pointer to an internal SDL array and should not be freed by the caller. Note: Use SDL_PumpEvents to update the state array. EXAMPLE
Uint8 *keystate = SDL_GetKeyState(NULL); if ( keystate[SDLK_RETURN] ) printf("Return Key Pressed. "); SEE ALSO
SDL Key Symbols, SDL_PumpEvents SDL
Tue 11 Sep 2001, 22:59 SDL_GetKeyState(3)

Check Out this Related Man Page

SDL_keysym(3)							 SDL API Reference						     SDL_keysym(3)

NAME
SDL_keysym - Keysym structure STRUCTURE DEFINITION
typedef struct{ Uint8 scancode; SDLKey sym; SDLMod mod; Uint16 unicode; } SDL_keysym; STRUCTURE DATA
scancode Hardware specific scancode sym SDL virtual keysym mod Current key modifiers unicode Translated character DESCRIPTION
The SDL_keysym structure is used by reporting key presses and releases since it is a part of the SDL_KeyboardEvent. The scancode field should generally be left alone, it is the hardware dependent scancode returned by the keyboard. The sym field is extremely useful. It is the SDL-defined value of the key (see SDL Key Syms. This field is very useful when you are checking for certain key presses, like so: . . while(SDL_PollEvent(&event)){ switch(event.type){ case SDL_KEYDOWN: if(event.key.keysym.sym==SDLK_LEFT) move_left(); break; . . . } } . . mod stores the current state of the keyboard modifiers as explained in SDL_GetModState. The unicode is only used when UNICODE translation is enabled with SDL_EnableUNICODE. If unicode is non-zero then this a the UNICODE character corresponding to the keypress. If the high 9 bits of the character are 0, then this maps to the equivalent ASCII character: char ch; if ( (keysym.unicode & 0xFF80) == 0 ) { ch = keysym.unicode & 0x7F; } else { printf("An International Character. "); } UNICODE translation does have a slight overhead so don't enable it unless its needed. SEE ALSO
SDLKey SDL
Tue 11 Sep 2001, 23:00 SDL_keysym(3)

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