On Mar 17, 2019, at 4:38 PM, katja <katjavetter@gmail.com> wrote:

Eventually the widget won my preference because it is easier to use,
and because Pd's widgetbehavior infrastructure is made for such things
after all. My implementation is almost complete except for the thing
that sparked the current discussion: mouseup data. It would be great
if a widget could subscribe to mouseup events, but a callback for that
isn't available through widgetbehavior.