SE>
  > How can I catch the DM_DRAGOVER when it is over a control or child window
  > of a dialogue window [...] ?
SE>

  All messages to a window (in the generic sense of the term -- including
  controls) are processed by its window procedure.  To intercept the
  messages for a window whose class you didn't register yourself (such as
  WC_BUTTON or WC_ENTRYFIELD), you need to subclass the control using
  WinSubclassWindow.

  > JdeBP <
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