H16555 s 00070/00000/00000 d D 1.1 02/05/02 15:35:04 root 2 1 cC cF1 cK50021 cO-rw-rw-r-- e s 00000/00000/00000 d D 1.0 02/05/02 15:35:04 root 1 0 c BitKeeper file /Mastodon/Core/Build/ncurses/Ada95/html/curs_overlay.3x.html cBor@egypt.pell.portland.or.us|ChangeSet|20020502223039|07086|e73225ae258b78f8 cHegypt.pell.portland.or.us cK21240 cPAda95/html/curs_overlay.3x.html cRd7f32612772d7627 cV4 cX0x821 cZ-07:00 e u U f e 0 f x 0x821 t T I 2
overlay, overwrite, copywin - overlay and manipulate over- lapped curses windows
#include <curses.h> int overlay(const WINDOW *srcwin, WINDOW *dstwin); int overwrite(const WINDOW *srcwin, WINDOW *dstwin); int copywin(WINDOW *srcwin, WINDOW *dstwin, int sminrow, int smincol, int dminrow, int dmincol, int dmaxrow, int dmaxcol, int overlay);
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 destructive. The copywin routine provides a finer granularity of con- trol over the overlay and overwrite routines. Like in the prefresh routine, a rectangle is specified in the destina- tion window, (dminrow, dmincol) and (dmaxrow, dmaxcol), and the upper-left-corner coordinates of the source win- dow, (sminrow, smincol). If the argument overlay is true, then copying is non-destructive, as in overlay.
Routines that return an integer return ERR upon failure, and OK (SVr4 only specifies "an integer value other than ERR") upon successful completion.
Note that overlay and overwrite may be macros.
The XSI Curses standard, Issue 4 describes these functions (adding the const qualifiers). It further specifies their behavior in the presence of characters with multi-byte renditions (not yet supported in this implementation).
curses(3X), curs_pad(3X), curs_refresh(3X)E 2 I 1 E 1