Managed Activate event in MDI Parent Form

[crangel]

Hi

i´m develop one app multi-document, is a similar MsWord application

I have one MDI Form, that lodges several MDIChild, every time
that closed one I make a trigger process, but when I close the last Form
opened does not complete do it, I was using the Activate of
forms to call the process but in my form father not
it shoots Activate event when I close the last form child.

that event I can use?
that I can implement?