NCurses Library Reference in Java

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Appendix A
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10 11 12 13 14 15 16 17 18 19 20 21 22 23
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NCurses Library Reference
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wrefresh(fred); /* Initial write of fred */ waddstr(fred, Hello ); addstr( The window fred ); if(is_wintouched(fred)) addstr( has ); else addstr( has not ); addstr( been changed since the last refresh().\n ); refresh(); getch(); endwin(); return 0; }
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Sample output:
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The window fred has been changed since the last refresh().
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Also See
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touchwin(), untouchwin(), is_linetouched(), refresh()
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keyname()
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The keyname() function returns a string representing the character or key code associated with a specific value.
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Man Page Format
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char *keyname(int c); char *key_name(wchar_t w);
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Format Reference
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c is an int value representing a specific character code. wchar_t w is used to represent wide character formats with the key_name() variation of this function.
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Return Value
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A string, char pointer, representing the character, control code, meta code, or keyboard constant for the key code specified. NULL is returned on error.
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Appendix A
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NCurses Library Reference
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Notes
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Codes corresponding to ASCII control codes are displayed using their corresponding alphabetic or punctuation symbol, prefixed by the ^ symbol. Extended ASCII codes are displayed prefixed by M- (for meta), followed by their corresponding ASCII code characters. keyname() also returns the constant name defined for special keys on the keyboard, such as KEY_UP. While KEY_UP is defined in NCURSES.H as a specific value, when that value (the KEY_UP constant) is used with keyname(), the string KEY_UP is returned, and similarly for other special keyboard keys and constants.
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Example
ckey = keyname(v);
Here, the string returned by keyname() for the key code in variable v is saved in the char pointer variable ckey.
Sample Program
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 #include <ncurses.h> int main(void) { int c; initscr(); for(c=0;c<255;c++) printw( %-5s ,keyname(c)); refresh(); getch(); endwin(); return 0; }
Sample output:
^@ ^M ^P ^] ^A ^N ^Q ^^ ! . 1 > ^B ^O ^R ^_ / 2 ^C ^S # 3 ^D ^T $ 4 ^E ^U % 5 ^F ^V & 6 ^G ^W 7 ^H ^X ( 8 ^I ^Y ) 9 ^J ^Z * : ^K ^[ + ; ^L ^\ , < ; ; -; =;
Appendix A
@ N P ^ ` n p a o s t u v w x Q _ b c d e f g h A O R S T U V W X B C D E F G H
NCurses Library Reference
I Y i y J Z j z K [ k { L \ l | M; ] ; m; };
q r ~ ^ M-^@ M-^A M-^B ^M M-^N M-^O M-^P M-^Q M-^R M-^] M-^^ M-^_ MM-! M- -- M-. M-/ M-0 M-1 M-2 M-= M-> M- M-@ M-A M-B M-N M-O M-P M-Q M-R M-^ M-_ M-` M-a M-b M-n M-o M-p M-q M-r M-~
M-^C M-^D M-^E M-^F M-^G M-^H M-^I M-^J M-^K M-^L M-; M-^S M-^T M-^U M-^V M-^W M-^X M-^Y M-^Z M-^[ M-^\ ; M-# M-3 M-C M-S M-c M-s M-$ M-4 M-D M-T M-d M-t M-% M-5 M-E M-U M-e M-u M-& M-6 M-F M-V M-f M-v M- M-7 M-G M-W M-g M-w M-( M-8 M-H M-X M-h M-x M-) M-9 M-I M-Y M-i M-y M-* M-: M-J M-Z M-j M-z M-+ M-; M-K M-[ M-k M-{ M-, M-< M-L M-\ M-l M-| M; ; M-M; M-]; M-m; M-};
Also See
unctrl(), addch()
keypad()
The keypad() function allows special keys (nonalphanumeric), function keys, and cursor control keys to be read by NCurses programs.
Man Page Format
int keypad(WINDOW *win, bool bf);
Format Reference
win is the name of a WINDOW variable, indicating the window through which special keys can be read, or stdscr for the standard screen. (See getch() for more information on how the win argument plays out with NCurses input.) bf is a Boolean value, either TRUE to turn on the read of special keys or FALSE to disable that feature.
Appendix A
NCurses Library Reference
Return Value
ERR on failure, OK or some value other than ERR on success.
Notes
Many of the special keys keypad() allows your code to monitor are defined in NCURSES.H and listed in Appendix D. The operating system may steal special function keys from your program, intercepting them before your code has a chance to process the key process. When that s the case, you can try to use the raw() function in NCurses to get the function keys passed directly to your program. On PCs, the Num Lock state must be off for the keys on the numeric keypad to be read as cursor movement keys, not numbers. Note, however, that xterm looks to see what s going on and overlays its own configuration, which may override this.