I have custom control which is TScrollingWinControl descendant but it doesn't receive WM_KEYDOWN. I used spy++ and it showed me that no such message is sent to the control. What should I do in order to be able to receive keyboard input.
Update: All that's needed was to call SetFocus in the WM_MOUSEDOWN handler. From this moment on the control starts receiving WM_KEYDOWN. Thanks to TLana and sorry for asking something that's already been asked before.