getch(3XCURSES) 					  X/Open Curses Library Functions					   getch(3XCURSES)

NAME

       getch, wgetch, mvgetch, mvwgetch - get a single-byte character from the terminal

SYNOPSIS

       cc [ flag... ] file... -I /usr/xpg4/include  -L	/usr/xpg4/lib 
	-R  /usr/xpg4/lib  -lcurses  [ library... ]

       c89 [ flag... ] file... -lcurses [ library... ]

       #include <curses.h>

       int getch(void);

       int wgetch(WINDOW *win);

       int mvgetch(int y, int x);

       int mvwgetch(WINDOW *win, int y, int x);

PARAMETERS

       win    Is a pointer to the window associated with the terminal from which the  character is to be read.

       y      Is the y (row) coordinate for the position of the character to be read.

       x      Is the x (column) coordinate for the position of the character to be read.

DESCRIPTION

       These functions read a single-byte character from the terminal associated with the current or specified window. The results are unspecified
       if the input is not a single-byte character. If keypad(3XCURSES) is enabled, these functions respond to the pressing of a function  key	by
       returning the corresponding KEY_ value defined in <curses.h>

       Processing of terminal input is subject to the general rules described on the keypad(3XCURSES) manual page.

       If echoing is enabled, then the character is echoed as though it were provided as an input argument to addch(3XCURSES), except for the fol-
       lowing characters:

       <backspace>	The input is interpreted as follows: unless the cursor already was in column 0, <backspace> moves the  cursor  one  column
			toward	the  start  of the current line and any characters after the <backspace> are added or inserted starting there. The
			character at the resulting cursor position it then deleted as though delch(3XCURSES) were called, except that if the  cur-
			sor was originally in the first column of the line, the user is alerted as though beep(3XCURSES) were called.

       Function keys	The user is alerted  as though beep() were called. Information concerning the function keys is not returned to the caller.

       If the current or specified window is not a pad, and it has been moved modified since the last refresh operation, then it will be refreshed
       before another character is read.

   Constant Values for Function Keys
       The following is a list of tokens for function keys that are returned by  the getch() set of functions if keypad handling is enabled  (some
       terminals may not support all tokens).

       +-----------------------------------------------------------+
       |    Constant			 Description		   |
       +-----------------------------------------------------------+
       |KEY_BREAK	   Break key				   |
       |KEY_DOWN	   The down arrow key			   |
       |KEY_UP		   The up arrow key			   |
       |KEY_LEFT	   The left arrow key			   |
       |KEY_RIGHT	   The right arrow key			   |
       |KEY_HOME	   Home key				   |
       |KEY_BACKSPACE	   Backspace				   |
       |KEY_F0		   Function  keys.   Space for 64 keys is  |
       |		   reserved.				   |
       |KEY_F(n)	   For	0 <= n <= 63			   |
       |KEY_DL		   Delete line				   |
       |KEY_IL		   Insert line				   |
       |KEY_DC		   Delete character			   |
       |KEY_IC		   Insert char or enter insert mode	   |
       |KEY_EIC 	   Exit insert char mode		   |
       |KEY_CLEAR	   Clear screen 			   |
       |KEY_EOS 	   Clear to end of screen		   |
       |KEY_EOL 	   Clear to end of line 		   |
       |KEY_SF		   Scroll 1 line forward		   |
       | KEY_SR 	   Scroll 1 line backwards		   |
       |KEY_NPAGE	   Next page				   |
       |KEY_PPAGE	   Previous page			   |
       |KEY_STAB	   Set tab				   |
       |KEY_CTAB	   Clear tab				   |
       |KEY_CATAB	   Clear all tabs			   |
       |KEY_ENTER	   Enter or send			   |
       |KEY_SRESET	   Soft (partial) reset 		   |
       |KEY_RESET	   Reset or hard reset			   |
       |KEY_PRINT	   Print or copy			   |
       |KEY_LL		   Home down or bottom (lower left)	   |
       |KEY_A1		   Upper left of keypad 		   |
       |KEY_A3		   Upper right of keypad		   |
       |KEY_B2		   Center of keypad			   |
       |KEY_C1		   Lower left of keypad 		   |
       |KEY_C3		   Lower right of keypad		   |
       |KEY_BTAB	   Back tab				   |
       |KEY_BEG 	   Beginning key			   |
       |KEY_CANCEL	   Cancel key				   |
       |KEY_CLOSE	   Close key				   |
       |KEY_COMMAND	   Cmd (command) key			   |
       |KEY_COPY	   Copy key				   |
       |KEY_CREATE	   Create key				   |
       |KEY_END 	   End key				   |
       |KEY_EXIT	   Exit key				   |
       |KEY_FIND	   Find key				   |
       |KEY_HELP	   Help key				   |
       |KEY_MARK	   Mark key				   |
       |KEY_MESSAGE	   Message key				   |
       |KEY_MOVE	   Move key				   |
       |KEY_NEXT	   Next object key			   |
       |KEY_OPEN	   Open key				   |
       |KEY_OPTIONS	   Options key				   |
       |KEY_PREVIOUS	   Previous object key			   |
       |KEY_REDO	   Redo key				   |
       |KEY_REFERENCE	   Reference key			   |
       |KEY_REFRESH	   Refresh key				   |
       |KEY_REPLACE	   Replace key				   |
       |KEY_RESTART	   Restart key				   |
       |KEY_RESUME	   Resume key				   |
       |KEY_SAVE	   Save key				   |
       |KEY_SBEG	   Shifted beginning key		   |
       |KEY_SCANCEL	   Shifted cancel key			   |
       |KEY_SCOMMAND	   Shifted command key			   |
       |KEY_SCOPY	   Shifted copy key			   |
       |KEY_SCREATE	   Shifted create key			   |
       |KEY_SDC 	   Shifted delete char key		   |
       |KEY_SDL 	   Shifted delete line key		   |
       |KEY_SELECT	   Select key				   |
       |KEY_SEND	   Shifted end key			   |
       |KEY_SEOL	   Shifted clear line key		   |
       |KEY_SEXIT	   Shifted exit key			   |
       |KEY_SFIND	   Shifted find key			   |
       |KEY_SHELP	   Shifted help key			   |
       |KEY_SHOME	   Shifted home key			   |
       |KEY_SIC 	   Shifted input key			   |
       |KEY_SLEFT	   Shifted left arrow key		   |
       |KEY_SMESSAGES	   Shifted messages key 		   |
       |KEY_SMOVE	   Shifted move key			   |
       |KEY_SNEXT	   Shifted next key			   |
       |KEY_SOPTIONS	   Shifted options key			   |
       |KEY_SPREVIOUS	   Shifted previous key 		   |
       |KEY_SPRINT	   Shifted print key			   |
       |KEY_SREDO	   Shifted redo key			   |
       |KEY_SREPLACE	   Shifted replace key			   |
       |KEY_SRIGHT	   Shifted right arrow key		   |
       |KEY_SRSUME	   Shifted resume key			   |
       |KEY_SSAVE	   Shifted save key			   |
       |KEY_SSUSPEND	   Shifted suspend key			   |
       |KEY_SUNDO	   Shifted undo key			   |
       |KEY_SUSPEND	   Suspend key				   |
       |KEY_UNDO	   Undo key				   |
       +-----------------------------------------------------------+

RETURN VALUES

       Upon successful completion, these functions return the single-byte character, KEY_ value, or ERR. When in the nodelay mode and no  data	is
       available, ERR is returned.

ERRORS

       No errors are defined.

USAGE

       Applications should not define the escape key by itself as a single-character function.

       When  using these functions, nocbreak mode (cbreak(3XCURSES)) and echo mode (echo(3XCURSES)) should not be used at the same time. Depending
       on the state of the terminal when each character is typed, the application may produce undesirable results.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Standard			   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |Unsafe			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       cbreak(3XCURSES),  echo(3XCURSES),  halfdelay(3XCURSES),  keypad(3XCURSES),  libcurses(3XCURSES),  nodelay(3XCURSES),  notimeout(3XCURSES),
       raw(3XCURSES), timeout(3XCURSES), attributes(5), standards(5)

SunOS 5.11							    5 Jun 2002							   getch(3XCURSES)