I've derived a component from aa tpaintbox which draws a shadow under each of it's childs... It runs well, but I would like to repaint some parts of the shadows when one child-windows changes it's position, size or dissapeares at all.
How can I get a notification when a child-window changes it's bounds?
It's not possible to use the methods provided by the child-windows. I need them for other purposes. I read the windows api, but didn't find a message which does what I want.