X-Git-Url: https://ncurses.scripts.mit.edu/?p=ncurses.git;a=blobdiff_plain;f=man%2Fcurs_overlay.3x;h=f80477f27ff5d69aa6aea1fdf950b2a918d31f67;hp=0c7b93df37fca01013bac424910f90fd7ee47088;hb=152c5a605234b7ea36ba3a03ec07e124bb6aac75;hpb=3a9b6a3bf0269231bef7de74757a910dedd04e0c diff --git a/man/curs_overlay.3x b/man/curs_overlay.3x index 0c7b93df..f80477f2 100644 --- a/man/curs_overlay.3x +++ b/man/curs_overlay.3x @@ -1,46 +1,88 @@ +.\"*************************************************************************** +.\" Copyright 2020 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 * +.\" "Software"), to deal in the Software without restriction, including * +.\" without limitation the rights to use, copy, modify, merge, publish, * +.\" distribute, distribute with modifications, sublicense, and/or sell * +.\" copies of the Software, and to permit persons to whom the Software is * +.\" furnished to do so, subject to the following conditions: * +.\" * +.\" The above copyright notice and this permission notice shall be included * +.\" in all copies or substantial portions of the Software. * +.\" * +.\" THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * +.\" OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * +.\" MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * +.\" IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * +.\" DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * +.\" OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * +.\" THE USE OR OTHER DEALINGS IN THE SOFTWARE. * +.\" * +.\" Except as contained in this notice, the name(s) of the above copyright * +.\" holders shall not be used in advertising or otherwise to promote the * +.\" sale, use or other dealings in this Software without prior written * +.\" authorization. * +.\"*************************************************************************** +.\" +.\" $Id: curs_overlay.3x,v 1.19 2020/02/02 23:34:34 tom Exp $ .TH curs_overlay 3X "" +.na +.hy 0 .SH NAME -\fBoverlay\fR, \fBoverwrite\fR, \fBcopywin\fR - overlay and -manipulate overlapped \fBcurses\fR windows +\fBoverlay\fR, +\fBoverwrite\fR, +\fBcopywin\fR \- overlay and manipulate overlapped \fBcurses\fR windows +.ad +.hy .SH SYNOPSIS \fB#include \fR - -\fBint overlay(const WINDOW *srcwin, WINDOW *dstwin);\fR +.sp +\fBint overlay(const WINDOW *\fP\fIsrcwin\fP\fB, WINDOW *\fP\fIdstwin\fP\fB);\fR .br -\fBint overwrite(const WINDOW *srcwin, WINDOW *dstwin);\fR +\fBint overwrite(const WINDOW *\fP\fIsrcwin\fP\fB, WINDOW *\fP\fIdstwin\fP\fB);\fR .br -\fBint copywin(WINDOW *srcwin, WINDOW *dstwin, int sminrow, - int smincol, int dminrow, int dmincol, int dmaxrow, - int dmaxcol, int overlay);\fR +\fBint copywin(const WINDOW *\fP\fIsrcwin\fP\fB, WINDOW *\fP\fIdstwin\fP\fB, int \fP\fIsminrow\fP\fB,\fR + \fBint \fP\fIsmincol\fP\fB, int \fP\fIdminrow\fP\fB, int \fP\fIdmincol\fP\fB, int \fP\fIdmaxrow\fP\fB,\fR + \fBint \fP\fIdmaxcol\fP\fB, int \fP\fIoverlay\fP\fB);\fR .SH DESCRIPTION +.SS overlay, overwrite 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 +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. - +.SS copywin +.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, +\fBoverlay\fR and \fBoverwrite\fR routines. +As 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. +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. .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 completion. +.PP +X/Open defines no error conditions. +In this implementation, +\fBcopywin\fP, +\fBoverlay\fP and \fBoverwrite\fP return an error +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. .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 -with multi-byte renditions (not yet supported in this implementation). +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: