Hello gerhard

i'm not sure what you mean exactly but i don't think i've done what you think i've done.
(hmmm very criptic.)

The form is an instantiated class on wich a grid already exists.
The grid is created with the help of the builder.
It seems that when the focus is on the grid the form can't be released by the mainapp.close() function.

There's no problem closing it directly.