Re: LYNX-DEV scrollok and lynx_force_repaint

[Klaus Weide]

On Wed, 5 Nov 1997, John E. Davis wrote:

> On Wed, 5 Nov 1997 12:13:32 -0600 (CST), Klaus Weide <address@hidden> said:
> >Are you sure that a call to lynx_force_repaint() causes this?  Which one?
> 
>    I know for sure that the culprit is LY_SLrefresh and not LY_SLclear
> because I changed LY_SLrefresh to
> 
> PUBLIC void LY_SLrefresh NOARGS
> {
> #if 0
>     if (FullRefresh) {
>       SLsmg_touch_lines(0, LYlines);
>     }
> #endif
>     FullRefresh = FALSE;
>     SLsmg_refresh();
> 
>     return;
> }
> 
> as a quick hack to get around the problem.

Ok, I think I understand now what is happening. In the following
section in LYForms.c

#if defined(FANCY_CURSES) || defined(USE_SLANG)
            if (!enable_scrollback && form->num_value == OrigNumValue)
#if defined(VMS) && !defined(USE_SLANG)
                c = DO_NOTHING;
#else
                c = 23;
#endif /* VMS && !USE_SLANG */
            else
#endif /* FANCY_CURSES || USE_SLANG */
                c = 12;  /* CTRL-L for repaint */
            break;


if the form->num_value has changed 12 is returned which makes the full
refresh happen.  It should instead return 23, and the refresh will not
be a full one.

     Klaus

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