I have an edit control. In the parent window I\'m listening a WM_COMMAND
message. But my control doesn\'t send it on change. Moreover, when I\'m watching messages w
For an edit control, notifications are sent to the original parent of the control. That is, in your case, the message only window.
In a comment to a similar question Raymond Chen says:
Many controls cache the original parent. Not much you can do about it.
You may be best postponing creation of the edit control until you have created its parent.