X-Git-Url: https://ncurses.scripts.mit.edu/?a=blobdiff_plain;f=man%2Fcurs_overlay.3x;h=39214789701bef4941a86655ba590b60b97c51f7;hb=64845eab0d05cd928ed2455d5bc5b58e0b33c893;hp=d1bfeb362a471bb23b3ec5068d368641c44c4897;hpb=71c0306f0824ef2b10c4c5813fb003db48f3012e;p=ncurses.git diff --git a/man/curs_overlay.3x b/man/curs_overlay.3x index d1bfeb36..39214789 100644 --- a/man/curs_overlay.3x +++ b/man/curs_overlay.3x @@ -1,5 +1,6 @@ .\"*************************************************************************** -.\" Copyright (c) 1998-2006,2010 Free Software Foundation, Inc. * +.\" Copyright 2020-2022,2023 Thomas E. Dickey * +.\" Copyright 1998-2013,2015 Free Software Foundation, Inc. * .\" * .\" Permission is hereby granted, free of charge, to any person obtaining a * .\" copy of this software and associated documentation files (the * @@ -26,43 +27,44 @@ .\" authorization. * .\"*************************************************************************** .\" -.\" $Id: curs_overlay.3x,v 1.15 2010/07/31 16:10:55 tom Exp $ -.TH curs_overlay 3X "" -.na -.hy 0 +.\" $Id: curs_overlay.3x,v 1.33 2023/10/07 21:19:07 tom Exp $ +.TH curs_overlay 3X 2023-10-07 "ncurses 6.4" "Library calls" .SH NAME -\fBoverlay\fR, -\fBoverwrite\fR, -\fBcopywin\fR \- overlay and manipulate overlapped \fBcurses\fR windows -.ad -.hy +\fB\%overlay\fP, +\fB\%overwrite\fP, +\fB\%copywin\fP \- +overlay \fIcurses\fR windows and manipulate them .SH SYNOPSIS -\fB#include \fR -.sp -\fBint overlay(const WINDOW *srcwin, WINDOW *dstwin);\fR -.br -\fBint overwrite(const WINDOW *srcwin, WINDOW *dstwin);\fR -.br -\fBint copywin(const WINDOW *srcwin, WINDOW *dstwin, int sminrow,\fR - \fBint smincol, int dminrow, int dmincol, int dmaxrow,\fR - \fBint dmaxcol, int overlay);\fR -.SH DESCRIPTION -The \fBoverlay\fR and \fBoverwrite\fR routines overlay \fIsrcwin\fR on -top of \fIdstwin\fR. \fIscrwin\fR and \fIdstwin\fR are not required -to be the same size; only text where the two windows overlap is -copied. The difference is that \fBoverlay\fR is non-destructive -(blanks are not copied) whereas \fBoverwrite\fR is destructive. +.nf +\fB#include .PP -The \fBcopywin\fR routine provides a finer granularity of control over the -\fBoverlay\fR and \fBoverwrite\fR routines. Like in the \fBprefresh\fR -routine, a rectangle is specified in the destination window, (\fIdminrow\fR, -\fIdmincol\fR) and (\fIdmaxrow\fR, \fIdmaxcol\fR), and the upper-left-corner -coordinates of the source window, (\fIsminrow\fR, \fIsmincol\fR). If the -argument \fIoverlay\fR is \fBtrue\fR, then copying is non-destructive, as in -\fBoverlay\fR. +\fBint overlay(const WINDOW *\fIsrcwin\fP, WINDOW *\fIdstwin\fP); +\fBint overwrite(const WINDOW *\fIsrcwin\fP, WINDOW *\fIdstwin\fP); +\fBint copywin(const WINDOW *\fIsrcwin\fP, WINDOW *\fIdstwin\fP, int \fIsminrow\fP, + \fBint \fIsmincol\fB, int \fIdminrow\fB, int \fIdmincol\fB, int \fIdmaxrow\fB,\fR + \fBint \fIdmaxcol\fB, int \fIoverlay\fB);\fR +.fi +.SH DESCRIPTION +.SS overlay, overwrite +The \fBoverlay\fP and \fBoverwrite\fP routines overlay \fIsrcwin\fP on +top of \fIdstwin\fP. +\fIscrwin\fP and \fIdstwin\fP are not required +to be the same size; only text where the two windows overlap is copied. +The difference is that \fBoverlay\fP is non-destructive +(blanks are not copied) whereas \fBoverwrite\fP is destructive. +.SS copywin +The \fBcopywin\fP routine provides a finer granularity of control over the +\fBoverlay\fP and \fBoverwrite\fP routines. +As in the \fBprefresh\fP routine, +a rectangle is specified in the destination window, (\fIdminrow\fP, +\fIdmincol\fP) and (\fIdmaxrow\fP, \fIdmaxcol\fP), and the upper-left-corner +coordinates of the source window, (\fIsminrow\fP, \fIsmincol\fP). +If the argument \fIoverlay\fP is \fBtrue\fP, +then copying is non-destructive, +as in \fBoverlay\fP. .SH RETURN VALUE -Routines that return an integer return \fBERR\fR upon failure, and \fBOK\fR -(SVr4 only specifies "an integer value other than \fBERR\fR") upon successful +Routines that return an integer return \fBERR\fP upon failure, and \fBOK\fP +(SVr4 only specifies "an integer value other than \fBERR\fP") upon successful completion. .PP X/Open defines no error conditions. @@ -72,16 +74,13 @@ In this implementation, if either of the window pointers are null, or if some part of the window would be placed off-screen. .SH NOTES -Note that \fBoverlay\fR and \fBoverwrite\fR may be macros. +Note that \fBoverlay\fP and \fBoverwrite\fP may be macros. .SH PORTABILITY The XSI Curses standard, Issue 4 describes these functions (adding the const -qualifiers). It further specifies their behavior in the presence of characters +qualifiers). +It further specifies their behavior in the presence of characters with multibyte renditions (not yet supported in this implementation). .SH SEE ALSO -\fBcurses\fR(3X), \fBcurs_pad\fR(3X), \fBcurs_refresh\fR(3X) -.\"# -.\"# The following sets edit modes for GNU EMACS -.\"# Local Variables: -.\"# mode:nroff -.\"# fill-column:79 -.\"# End: +\fB\%curses\fP(3X), +\fB\%curs_pad\fP(3X), +\fB\%curs_refresh\fP(3X)