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curs_touch

Section: C Library Functions (3)
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NAME

curs_touch, is_linetouched, is_wintouched, touchline, touchwin, untouchwin, wtouchln - Curses routines that control refresh  

SYNOPSIS

#include <curses.h>

bool is_linetouched( WINDOW *win, int line ); bool is_wintouched( WINDOW *win ); int touchline( WINDOW *win, int start, int count ); int touchwin( WINDOW *win ); int untouchwin( WINDOW *win ); int wtouchln( WINDOW *win, int y, int n, int changed );
 

LIBRARY

Curses Library (libcurses)
 

STANDARDS

Interfaces documented on this reference page conform to industry standards as follows:

touchwin:  XPG4, XPG4-UNIX

is_linetouched, is_wintouched, touchline, untouchwin, wtouchln:  XPG4-UNIX

Refer to the standards(5) reference page for more information about industry standards and associated tags.
 

DESCRIPTION

The touchwin and touchline routines throw away all optimization information about which parts of the window have been touched, by pretending that the entire window has been drawn on. It is sometimes necessary to call these routines when using overlapping windows. In this case, a change to one window affects the other window, but the other window's records of which lines have been changed do not reflect the change in the first window. The touchline routine only pretends that count lines have been changed, beginning with line start.

The untouchwin routine marks all lines in the window as unchanged since the last call to wrefresh.

The wtouchln routine makes n lines in the window, starting at line y, look as if they have changed (if changed=1) or have not changed (changed=0) since the last call to wrefresh.

The is_linetouched or is_wintouched routines return TRUE if the specified line or window was modified since the last call to wrefresh; otherwise they return FALSE. In addition, is_linetouched returns ERR if line is not valid for the given window.
 

NOTES

The header file <curses.h> automatically includes the header file <stdio.h>.

Note that touchline may be a macro.
 

RETURN VALUES

All routines return the integer ERR upon failure and an integer value other than ERR upon successful completion, unless otherwise noted in the preceding routine descriptions.
 

SEE ALSO

Functions: curses(3), curs_refresh(3)

Others: standards(5)


 

Index

NAME
SYNOPSIS
LIBRARY
STANDARDS
DESCRIPTION
NOTES
RETURN VALUES
SEE ALSO

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Time: 02:40:55 GMT, October 02, 2010