#include <curses.h>
WINDOW *initscr(void);
int endwin(void);
int isendwin(void);
SCREEN *newterm(const char *type, FILE *outfd, FILE *infd);
SCREEN *set_term(SCREEN *new);
void delscreen(SCREEN* sp);
initscr() is normally the first
curses routine to call when
initializing a program. A few special routines sometimes
need to be called before it; these are slk_init(),
filter(),
ripoffline(), use_env(). For
multiple-terminal applications,
newterm() may be called before
initscr().
The initscr() code determines the terminal type and
initializes all curses data structures. initscr()
also causes the first call to refresh() to clear the screen.
If errors occur, initscr() writes an appropriate error
message to standard error and exits; otherwise, a pointer is returned
to stdscr.
A program that outputs to more than one terminal should
use the newterm() routine for each terminal instead of
initscr(). A program that needs to inspect capabilities,
so
it can continue to run in a line-oriented mode if the terminal cannot
support a screen-oriented program, would also
use newterm(). The routine newterm()
should be called once
for each terminal. It returns a variable of type SCREEN
*
which should be saved as a reference to that terminal.
The arguments are the type of the terminal to be used in
place of $TERM, a file pointer for output to the
terminal, and another file pointer for input from the terminal (if
type is NULL, $TERM
will be used). The program must also
call endwin() for each terminal being used before exiting
from curses. If newterm() is called
more than once for the
same terminal, the first terminal referred to must be the
last one for which endwin() is called.
A program should always call endwin() before exiting or
escaping from curses mode temporarily. This routine
restores tty modes, moves the cursor to the lower lefthand corner of the
screen and resets the terminal into the
proper non-visual mode. Calling refresh() or
doupdate() after
a temporary escape causes the program to resume visual
mode.
The isendwin() routine returns TRUE if
endwin() has been
called without any subsequent calls to wrefresh(), and
FALSE
otherwise.
The set_term() routine is used to switch between different
terminals. The screen reference new() becomes the new
current terminal. The previous terminal is returned by the
routine. This is the only routine which manipulates
SCREEN() pointers; all other routines affect only the
current terminal.
The delscreen() routine frees storage associated with the
SCREEN data structure. The endwin()
routine does not do this, so delscreen() should be called
after endwin() if a particular SCREEN
is no longer needed.
endwin() returns the integer ERR upon
failure and OK upon successful completion.
Routines that return pointers always return NULL on
error.
Note that initscr() and newterm() may
be macros.
These functions are described in the XSI Curses standard,
Issue 4. It specifies that portable applications must not
call initscr() more than once.
PTC MKS Toolkit for Professional Developers
PTC MKS Toolkit for Enterprise Developers
PTC MKS Toolkit for Enterprise Developers 64-Bit Edition
- Functions:
- curs_kernel(), curs_refresh(), curs_slk(), curs_util(), curses()
PTC MKS Toolkit 10.5 Documentation Build 40.