11-02-2011
Thank you so much CarloM! I was wondering though what is it in the printf command that pads the data with space? I was wondering if say I wanted to pad with zero's instead of spaces.
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LEARN ABOUT REDHAT
newpad
curs_pad(3X) curs_pad(3X)
NAME
newpad, subpad, prefresh, pnoutrefresh, pechochar - create and display curses pads
SYNOPSIS
#include <curses.h>
WINDOW *newpad(int nlines, int ncols);
WINDOW *subpad(WINDOW *orig, int nlines, int ncols,
int begin_y, int begin_x);
int prefresh(WINDOW *pad, int pminrow, int pmincol,
int sminrow, int smincol, int smaxrow, int smaxcol);
int pnoutrefresh(WINDOW *pad, int pminrow, int pmincol,
int sminrow, int smincol, int smaxrow, int smaxcol);
int pechochar(WINDOW *pad, chtype ch);
DESCRIPTION
The newpad routine creates and returns a pointer to a new pad data structure with the given number of lines, nlines, and columns, ncols. A
pad is like a window, except that it is not restricted by the screen size, and is not necessarily associated with a particular part of the
screen. Pads can be used when a large window is needed, and only a part of the window will be on the screen at one time. Automatic
refreshes of pads (e.g., from scrolling or echoing of input) do not occur. It is not legal to call wrefresh with a pad as an argument; the
routines prefresh or pnoutrefresh should be called instead. Note that these routines require additional parameters to specify the part of
the pad to be displayed and the location on the screen to be used for the display.
The subpad routine creates and returns a pointer to a subwindow within a pad with the given number of lines, nlines, and columns, ncols.
Unlike subwin, which uses screen coordinates, the window is at position (begin_x, begin_y) on the pad. The window is made in the middle of
the window orig, so that changes made to one window affect both windows. During the use of this routine, it will often be necessary to
call touchwin or touchline on orig before calling prefresh.
The prefresh and pnoutrefresh routines are analogous to wrefresh and wnoutrefresh except that they relate to pads instead of windows. The
additional parameters are needed to indicate what part of the pad and screen are involved. pminrow and pmincol specify the upper left-hand
corner of the rectangle to be displayed in the pad. sminrow, smincol, smaxrow, and smaxcol specify the edges of the rectangle to be dis-
played on the screen. The lower right-hand corner of the rectangle to be displayed in the pad is calculated from the screen coordinates,
since the rectangles must be the same size. Both rectangles must be entirely contained within their respective structures. Negative val-
ues of pminrow, pmincol, sminrow, or smincol are treated as if they were zero.
The pechochar routine is functionally equivalent to a call to addch followed by a call to refresh, a call to waddch followed by a call to
wrefresh, or a call to waddch followed by a call to prefresh. The knowledge that only a single character is being output is taken into con-
sideration and, for non-control characters, a considerable performance gain might be seen by using these routines instead of their equiva-
lents. In the case of pechochar, the last location of the pad on the screen is reused for the arguments to prefresh.
RETURN VALUE
Routines that return an integer return ERR upon failure and OK (SVr4 only specifies "an integer value other than ERR") upon successful com-
pletion.
Routines that return pointers return NULL on error, and set errno to ENOMEM.
NOTES
Note that pechochar may be a macro.
PORTABILITY
The XSI Curses standard, Issue 4 describes these functions.
SEE ALSO
curses(3X), curs_refresh(3X), curs_touch(3X), curs_addch(3X).
curs_pad(3X)