I looked for this on both archives (old one at http-tech and new one
at SourceForge) and found nothing. How can I give the focus back to
a control? I want focus to return to a textfield after pressing a
button. Specifically, the subroutine called by clicking the button
should select some text, but even if I call $TextFieldName->Select as
the last thing in the subroutine, the focus remains on the button.
If I click in the textfield, I lose the selection because the cursor
jumps to wherever I clicked.
