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Diffstat (limited to 'ncurses-5.9/man/curs_window.3x')
-rw-r--r-- | ncurses-5.9/man/curs_window.3x | 185 |
1 files changed, 185 insertions, 0 deletions
diff --git a/ncurses-5.9/man/curs_window.3x b/ncurses-5.9/man/curs_window.3x new file mode 100644 index 0000000..e039dda --- /dev/null +++ b/ncurses-5.9/man/curs_window.3x @@ -0,0 +1,185 @@ +.\"*************************************************************************** +.\" Copyright (c) 1998-2006,2010 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. * +.\"*************************************************************************** +.\" +.\" $Id$ +.TH curs_window 3X "" +.na +.hy 0 +.SH NAME +\fBnewwin\fR, +\fBdelwin\fR, +\fBmvwin\fR, +\fBsubwin\fR, +\fBderwin\fR, +\fBmvderwin\fR, +\fBdupwin\fR, +\fBwsyncup\fR, +\fBsyncok\fR, +\fBwcursyncup\fR, +\fBwsyncdown\fR \- create \fBcurses\fR windows +.ad +.hy +.SH SYNOPSIS +\fB#include <curses.h>\fR +.sp +\fBWINDOW *newwin(int nlines, int ncols, int begin_y,\fR + \fBint begin_x);\fR +.br +\fBint delwin(WINDOW *win);\fR +.br +\fBint mvwin(WINDOW *win, int y, int x);\fR +.br +\fBWINDOW *subwin(WINDOW *orig, int nlines, int ncols,\fR + \fBint begin_y, int begin_x);\fR +.br +\fBWINDOW *derwin(WINDOW *orig, int nlines, int ncols,\fR + \fBint begin_y, int begin_x);\fR +.br +\fBint mvderwin(WINDOW *win, int par_y, int par_x);\fR +.br +\fBWINDOW *dupwin(WINDOW *win);\fR +.br +\fBvoid wsyncup(WINDOW *win);\fR +.br +\fBint syncok(WINDOW *win, bool bf);\fR +.br +\fBvoid wcursyncup(WINDOW *win);\fR +.br +\fBvoid wsyncdown(WINDOW *win);\fR +.br +.SH DESCRIPTION +Calling \fBnewwin\fR creates and returns a pointer to a new window with the +given number of lines and columns. The upper left-hand corner of the window is +at line \fIbegin\fR_\fIy\fR, column \fIbegin\fR_\fIx\fR. If either +\fInlines\fR or \fIncols\fR is zero, they default to \fBLINES \-\fR +\fIbegin\fR_\fIy\fR and \fBCOLS \-\fR \fIbegin\fR_\fIx\fR. A new full-screen +window is created by calling \fBnewwin(0,0,0,0)\fR. +.PP +Calling \fBdelwin\fR deletes the named window, freeing all memory +associated with it (it does not actually erase the window's screen +image). Subwindows must be deleted before the main window can be +deleted. +.PP +Calling \fBmvwin\fR moves the window so that the upper left-hand +corner is at position (\fIx\fR, \fIy\fR). If the move would cause the +window to be off the screen, it is an error and the window is not +moved. Moving subwindows is allowed, but should be avoided. +.PP +Calling \fBsubwin\fR creates and returns a pointer to a new window +with the given number of lines, \fInlines\fR, and columns, +\fIncols\fR. The window is at position (\fIbegin\fR_\fIy\fR, +\fIbegin\fR_\fIx\fR) on the screen. (This position is relative to the +screen, and not to the window \fIorig\fR.) The window is made in the +middle of the window \fIorig\fR, so that changes made to one window +will affect both windows. The subwindow shares memory with the window +\fIorig\fR. When using this routine, it is necessary to call +\fBtouchwin\fR or \fBtouchline\fR on \fIorig\fR before calling +\fBwrefresh\fR on the subwindow. +.PP +Calling \fBderwin\fR is the same as calling \fBsubwin,\fR except that +\fIbegin\fR_\fIy\fR and \fIbegin\fR_\fIx\fR are relative to the origin +of the window \fIorig\fR rather than the screen. There is no +difference between the subwindows and the derived windows. +.PP +Calling \fBmvderwin\fR moves a derived window (or subwindow) +inside its parent window. The screen-relative parameters of the +window are not changed. This routine is used to display different +parts of the parent window at the same physical position on the +screen. +.PP +Calling \fBdupwin\fR creates an exact duplicate of the window \fIwin\fR. +.PP +Calling \fBwsyncup\fR touches all locations in ancestors of \fIwin\fR that are +changed in \fIwin\fR. If \fBsyncok\fR is called with second argument +\fBTRUE\fR then \fBwsyncup\fR is called automatically whenever there is a +change in the window. +.PP +The \fBwsyncdown\fR routine touches each location in \fIwin\fR that has been +touched in any of its ancestor windows. This routine is called by +\fBwrefresh\fR, so it should almost never be necessary to call it manually. +.PP +The routine \fBwcursyncup\fR updates the current cursor position of all the +ancestors of the window to reflect the current cursor position of the +window. +.SH RETURN VALUE +Routines that return an integer return the integer \fBERR\fR upon failure and +\fBOK\fR (SVr4 only specifies "an integer value other than \fBERR\fR") upon +successful completion. +.PP +Routines that return pointers return \fBNULL\fR on error. +.PP +X/Open defines no error conditions. +In this implementation +.RS +.TP 5 +\fBdelwin\fR +returns an error if the window pointer is null, or +if the window is the parent of another window. +.IP +This implementation also maintains a list of windows, +and checks that the pointer passed to \fBdelwin\fP is one that +it created, returning an error if it was not.. +.TP 5 +\fBmvderwin\fP +returns an error +if the window pointer is null, or +if some part of the window would be placed off-screen. +.TP 5 +\fBmvwin\fP +returns an error +if the window pointer is null, or +if the window is really a pad, or +if some part of the window would be placed off-screen. +.TP 5 +\fBsyncok\fP +returns an error +if the window pointer is null. +.RE +.SH NOTES +If many small changes are made to the window, the \fBwsyncup\fR option could +degrade performance. +.PP +Note that \fBsyncok\fR may be a macro. +.SH BUGS +The subwindow functions (\fIsubwin\fR, \fIderwin\fR, \fImvderwin\fR, +\fBwsyncup\fR, \fBwsyncdown\fR, \fBwcursyncup\fR, \fBsyncok\fR) are flaky, +incompletely implemented, and not well tested. +.PP +The System V curses documentation is very unclear about what \fBwsyncup\fR +and \fBwsyncdown\fR actually do. It seems to imply that they are only +supposed to touch exactly those lines that are affected by ancestor changes. +The language here, and the behavior of the \fBcurses\fR implementation, +is patterned on the XPG4 curses standard. The weaker XPG4 spec may result +in slower updates. +.SH PORTABILITY +The XSI Curses standard, Issue 4 describes these functions. +.SH SEE ALSO +\fBcurses\fR(3X), +\fBcurs_refresh\fR(3X), +\fBcurs_touch\fR(3X), +\fBcurs_variables\fR(3X) |