Which is the active form?

[Adagio]

I'm currently working on a project where I have a form using mdi with lots of different types of child forms
What I would like to know is how to find out which of the open child forms that is on top (or has focus?). When I click on a button on the parent form I want something to happen depending on which child form is on top

How can this be done?

 

[JohnH]

see http://www.vbdotnetforums.com/showthread.php?t=16385

 

[Adagio]

Thank you