I want to extend simple 3d editor. The problem is that the editor''s main window is created by .dll and I must not modify it. I add two more windows (modeless dialogs) along it''s sides, but now I need not to switch the focus. In my dialog is some controls (buttons, combos) and in the main window is editing by keys+mouse move. When I chnage something in my dialog, it get the focus and for editing in main window I must switch the focus back to main window. Is any way how to do it without switching focus ? a)- May I send all messages which receives dialog also to main window ? b)- When dialog get the focus, switch the focus to main window (by SetFocus()), Will than works combos ? Which is right ? Or any better ? PS: I must not use MFC