BCGControlBar Pro for MFC
UINT BCGM_EDIT_ON_FILL_AUTOCOMPLETE_LIST

The message is sent to the owner of edit box (CBCGPEdit) when the user types the text in auto-complete mode.

Parameters
wParamcontains the control ID of the edit box.
lParampointer to string list (CStringList*) with items matched to the typed text.
Returns
the return value is ignored.