scanw(), wscanw(), mvscanw(), mvwscanw(), vwscanw() - convert formatted input from a curses window
int scanw(char *fmt [, arg] ...); int wscanw(WINDOW *win, char *fmt [, arg] ...); int mvscanw(int y, int x, char *fmt [, arg] ...); int mvwscanw(WINDOW *win, int y, int x, char *fmt [, arg] ...);
int vwscanw(WINDOW *win, char *fmt, va_list varglist); int vw_scanw(WINDOW *win, char *fmt, va_list varglist);
The scanw(3), wscanw(3) and mvscanw(3) routines are analogous to scanf(3) (see scanf(3)). The effect of these routines is as though wgetstr(3) were called on the window, and the resulting line used as input for sscanf(3). Fields which do not map to a variable in the fmt field are lost.
The vwscanw(3) routine is similar to vwprintw(3) in that it performs a wscanw(3) using a variable argument list. The third argument is a va_list, a pointer to a list of arguments, as defined in <stdarg.h>. The vw_scanw(3) routine is a #define for vwscanw(3). vw_scanw(3) is planned for the XSI Curses standard. Traditionally, vwscanw(3) made use of <varargs.h> and vw_scanw(3) made use of <stdarg.h>, but both of the routines in this package use <stdarg.h>.
vwscanw(3) returns ERR on failure and an integer equal to the number of fields scanned on success.
Applications may use the return value from the scanw(3), wscanw(3), mvscanw(3) and mvwscanw(3) routines to determine the number of fields which were mapped in the call.
The XSI Curses standard, Issue 4 describes these functions. The function vwscanw(3) is marked TO BE WITHDRAWN, and is to be replaced by a function vw_scanw(3) using the <stdarg.h> interface.