Control's OnExit eats up mouseup event for new control when showing another window

Question

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Control\'s OnExit eats up mouseup event for new control when showing another window

The probl

Answer 1

In the onexit event I show a warningbox and then want to proceed as normal - moving the focus to where the user in fact clicked. Is that possible?

Yes, (Screen.)ActiveControl will always point to Edit3: before and after the call to ShowMessage:

procedure TForm1.Edit1Exit(Sender: TObject);
begin
  ShowMessage('Exit');
  PostMessage(ActiveControl.Handle, WM_LBUTTONUP, 0, 0);
end;

But this is just for completeness sake to your question! And it certainly is no tip nor advice! See Sertac's answer for the reason.