Method: Curses.setscrreg

Defined in:
ext/curses/curses.c

.setscrreg(top, bottom) ⇒ Object

call-seq:

setscrreg(top, bottom)

Set a software scrolling region in a window. top and bottom are lines numbers of the margin.

If this option and Curses.scrollok are enabled, an attempt to move off the bottom margin line causes all lines in the scrolling region to scroll one line in the direction of the first line. Only the text of the window is scrolled.



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# File 'ext/curses/curses.c', line 1060

static VALUE
curses_setscrreg(VALUE obj, VALUE top, VALUE bottom)
{
    /* may have to raise exception on ERR */
#ifdef HAVE_SETSCRREG
    curses_stdscr();
    return (setscrreg(NUM2INT(top), NUM2INT(bottom)) == OK) ? Qtrue : Qfalse;
#else
    return Qfalse;
#endif
}