On Wed, Jul 28, 2010 at 18:21, Laurent <[email protected]> wrote:
> Hi, > > I can see there are scroll events and an `on-scroll' method for canvas%, > but not for list-box% or list-control%. > Is there a way to know when a scrollbar is moved in a list-box%? > > I need this to synchronize the scrolling of several list-boxes. > > Oops, this one is clearly explained in the docs at set-first-visible-item: A program cannot detect when the scroll position changes except by polling > get-first-visible-item<file:///usr/plt-5.0.1.1/doc/gui/list-box_.html?q=vertical-panel%25#%28meth._%28%28%28lib._mred/main..rkt%29._list-box%7E25%29._get-first-visible-item%29%29>. > > Sorry.
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