newpad(3XCURSES)					  X/Open Curses Library Functions					  newpad(3XCURSES)

NAME

       newpad, pnoutrefresh, prefresh, subpad - create or refresh a pad or subpad

SYNOPSIS

       cc [ flag... ] file... -I /usr/xpg4/include  -L	/usr/xpg4/lib 
	-R  /usr/xpg4/lib  -lcurses  [ library... ]

       c89 [ flag... ] file... -lcurses [ library... ]

       #include <curses.h>

       WINDOW *newpad(int nlines, int ncols);

       int pnoutrefresh(WINDOW *pad, int pminrow, int pmincol, int sminrow,
	    int smincol,int smaxrow, int smaxcol);

       int prefresh(WINDOW *pad, int pminrow, int pmincol, int sminrow,
	    int smincol,int smaxrow, int smaxcol);

       WINDOW *subpad(WINDOW *orig, int nlines, int ncols);

PARAMETERS

       nlines	  Is the number of lines in the pad to be created.

       ncols	  Is the number of columns in the pad to be created.

       pad	  Is a pointer to the pad to refresh.

       pminrow	  Is the row coordinate of the upper left corner of the pad rectangle to be  copied

       pmincol	  Is the column coordinate of the upper left corner of the pad rectangle to be	copied.

       sminrow	  Is the row coordinate of the upper left corner of the rectangle on the physical screen where pad is to be positioned.

       smincol	  Is the column coordinate of the upper left corner of the rectangle on the  physical screen where pad is to be positioned.

       smaxrow	  Is the row coordinate of the lower right corner of the rectangle on the  physical screen where the pad is to be positioned.

       smaxcol	  Is the column coordinate of the lower right corner of the rectangle on the  physical screen where the pad is to be positioned.

       orig	  Is a pointer to the parent pad within which a sub-pad is created.

DESCRIPTION

       The newpad() function creates a new pad with the specified number of lines and columns.	A pointer to the new pad structure is returned.  A
       pad differs from a window in that it is not restricted to the size of the  physical screen.  It is useful when only part of a large  window
       will be displayed at any one  time.

       Automatic  refreshes  by  scrolling  or echoing of input do not take place when	pads are used.	Pads have their own refresh commands, pre-
       fresh() and pnoutrefresh().

       The prefresh() function copies the specified portion of the logical pad	to the terminal screen.  The parameters pmincol and pminrow  spec-
       ify the upper left corner of the rectangular area of the pad to be displayed. The lower right coordinate of the rectangular area of the pad
       that is to be  displayed is calculated from the screen parameters (sminrow,  smincol, smaxrow, smaxcol).

       This function calls the pnoutrefresh() function to copy the specified portion of pad to the  terminal  screen  and  the	doupdate(3XCURSES)
       function  to  do  the  actual update.  The logical cursor is copied to the same location in the physical window unless leaveok(3XCURSES) is
       enabled (in which case, the cursor is placed in a position that the program finds convenient).

       When outputting several pads at once, it is often more efficient to call the pnoutrefresh() and doupdate() functions directly.  A  call	to
       pnoutrefresh()  for  each  pad first, followed by only one call	to doupdate() to update the screen, results in one burst of output,  fewer
       characters sent, and less CPU time used.

       The subpad() function creates a sub-pad within the pad orig with  the specified number of lines and columns.  A	pointer  to  the  new  pad
       structure is returned. The sub-pad is positioned in the middle of orig.	Any changes made to one pad affect the other.	touchwin(3XCURSES)
       or touchline(3XCURSES) will likely have to be called on pad  orig to correctly update the window.

RETURN VALUES

       On success, the newpad() and subpad() functions returns a pointer to the new pad data structure. Otherwise, they return a null pointer.

       On success, the pnoutrefresh() and prefresh() functions return  OK. Otherwise, they return ERR.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Standard			   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |Unsafe			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       clearok(3XCURSES), doupdate(3XCURSES), is_linetouched(3XCURSES), libcurses(3XCURSES), pechochar(3XCURSES), attributes(5), standards(5)

SunOS 5.11							    5 Jun 2002							  newpad(3XCURSES)