Re: [ruby-fltk-users] In draw for 1 widget, setting another widget for redraw?

[Stephen D. <st...@da...>]

On Wed, 6 Nov 2002, Takaaki Tateishi wrote:

> Hello,
> 
> At Tue, 5 Nov 2002 14:04:20 +0000 (GMT),
> > Now Browser_ automatically adds a horizontal scrollbar if the item_widths
> > exceed the size of the browser.  The user can now scroll the browser
> > left-right.
> ...
> > I want to get the header widget to redraw when the browser is scrolled -
> 
> I don't exactly understand your trouble.
> After you call Browser_#has_scrollbar(Browser_::BOTH), a scrollbar is
> automatically added if the item_widths exceed the width of browser.
> Of course, the browser can be automatically scrolled if you scroll the
> scrollbar. So I think you don't need to redraw.
> 
> I checked with the following scripts.

Hi Takaaki,

My problem isn't with the handling of horizontal scroll in the browser_
itself - that works fine and automatically.

The problem is that I have a second widget that also needs to be redrawn
if the browser's horizontal scroll changes.  The 2nd widget is a heading
line, also allowing dragging of columns and column widths.  If the browser
is scrolled across then I need to draw the heading line similarly
scrolled.

I took your test script and expanded it to illustrate my problem.  In my
test I want the "Hposition is .." at the bottom to be redrawn whenever the
browser scroll changes.  I detect the change in the browser correctly ,
but calling footer.redraw and nothing happens.

OTOH, if you hide and re-show the window the "Hposition" footer will be
correctly redrawn.

Regards,
Steve