curs_overlay(3CURSES) Curses Library Functions curs_overlay(3CURSES)NAME
curs_overlay, overlay, overwrite, copywin - overlap and manipulate
overlapped curses windows
SYNOPSIS
cc [ flag ... ] file ... -lcurses [ library ... ]
#include <curses.h>
int overlay(WINDOW *srcwin, WINDOW *dstwin);
int overwrite(WINDOW *srcwin, WINDOW *dstwin);
int copywin(WINDOW *srcwin, WINDOW *dstwin, int sminrow,
int smincol, int dminrow, int dmincol,
int dmaxrow, int dmaxcol, int overlay);
DESCRIPTION
The overlay() and overwrite() routines overlay srcwin on top of dstwin.
scrwin and dstwin are not required to be the same size; only text where
the two windows overlap is copied. The difference is that overlay() is
non-destructive (blanks are not copied) whereas overwrite() is destruc‐
tive.
The copywin() routine provides a finer granularity of control over the
overlay() and overwrite() routines. Like in the prefresh() routine, a
rectangle is specified in the destination window, (dminrow, dmincol)
and (dmaxrow, dmaxcol), and the upper-left-corner coordinates of the
source window, (sminrow, smincol). If the argument overlay is true,
then copying is non-destructive, as in overlay().
RETURN VALUES
Routines that return an integer return ERR upon failure and an integer
value other than ERR upon successful completion.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
┌─────────────────────────────┬─────────────────────────────┐
│ ATTRIBUTE TYPE │ ATTRIBUTE VALUE │
├─────────────────────────────┼─────────────────────────────┤
│MT-Level │Unsafe │
└─────────────────────────────┴─────────────────────────────┘
SEE ALSOcurs_pad(3CURSES), curs_refresh(3CURSES), curses(3CURSES),
attributes(5)NOTES
The header <curses.h> automatically includes the headers <stdio.h> and
<unctrl.h>.
Note that overlay() and overwrite may be macros.
SunOS 5.11 31 Dec 1996 curs_overlay(3CURSES)
