SDL_EnableUNICODE(3) SDL API Reference SDL_EnableUNICODE(3)NAME
SDL_EnableUNICODE - Enable UNICODE translation
SYNOPSIS
#include "SDL.h"
int SDL_EnableUNICODE(int enable);
DESCRIPTION
Enables/Disables Unicode keyboard translation.
To obtain the character codes corresponding to received keyboard events, Unicode translation must first be turned on using this function.
The translation incurs a slight overhead for each keyboard event and is therefore disabled by default. For each subsequently received key
down event, the unicode member of the SDL_keysym structure will then contain the corresponding character code, or zero for keysyms that do
not correspond to any character code.
A value of 1 for enable enables Unicode translation; 0 disables it, and -1 leaves it unchanged (useful for querying the current translation
mode).
Note that only key press events will be translated, not release events.
RETURN VALUE
Returns the previous translation mode (0 or 1).
SEE ALSO
SDL_keysym
SDL Tue 11 Sep 2001, 22:59 SDL_EnableUNICODE(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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