curs_overlay(3X)                 UNIX System V                 curs_overlay(3X)


NAME
      cursoverlay:  overlay, overwrite, copywin - overlap and manipulate
      overlapped curses windows

SYNOPSIS
      #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 destructive.

      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 VALUE
      Routines that return an integer return ERR upon failure and an integer
      value other than ERR upon successful completion.

NOTES
      The header file <curses.h> automatically includes the header files
      <stdio.h> and <unctrl.h>.

      Note that overlay and overwrite may be macros.

SEE ALSO
      curses(3X), curspad(3X), cursrefresh(3X)
















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