initscr.3cur

来自「<B>Digital的Unix操作系统VAX 4.2源码</B>」· 3CUR 代码 · 共 54 行

.TH initscr 3cur 
.SH Name
initscr \- initialize terminal environment
.SH Syntax
.br
.B
#include <cursesX.h>
.PP
.br
.B
WINDOW \(**initscr  
.SH Description
.NXR "initscr subroutine"
.NXA "initscr subroutine" "refresh macro"
.NXA "initscr subroutine" "newterm subroutine"
This routine 
determines the terminal type, initializes all
.PN curses
data
structures and allocates memory space for the windows.  
It also arranges that the first call to 
the
.PN refresh 
routine will clear the screen.
.PP
The first routine called in a program using
.PN curses 
routines should almost always be 
.PN initscr .
If errors occur, 
.PN initscr
will write an appropriate error message to standard error and exit.
If the program needs an indication of error conditions, 
.PN newterm 
should be used instead of 
.PN initscr .
.PP
Note that the 
.PN curses
program should only call 
.PN initscr
once as it may overflow core memory if it is called repeatedly.
If this does occur, ERR is returned.
.SH Return Values
The
.PN initscr
function returns 
.PN stdscr
on success, and calls
.PN exit
on error.
.SH See Also
newterm(3cur), refresh(3cur)