I found the source of the problem, but I think my solution is lousy.

The app runs with its main form as a top level form app and _screen
is set to visible = .F.so there are not two entries in the taskbar. The customer
form is modeless and it makes no difference if I set its showwindow-prop to
"In Screen" or to "In toplevel form". As the Activate-Event is called after the Init,
it is clear why everything is workung in the init.So far, so bad.

Now, before setting new text on my form, I set the _screen.visible to .T. and
after that back to False. Does not seem good, but it works. But myve someone
has a better solution?

Best regards

Thomas