PRocedure DragDropFiles(Var message: TMessage); Message WM_DropFiles;
Procedure Tfm_main.DragDropFiles(Var message: TMessage);
Var
  p: Array[0..254] Of char;
  i: Word;
Begin
  Inherited;
  i := DragQueryFile(Message.wParam, $FFFFFFFF, Nil, 0);
  For i := 0 To i - 1 Do
  Begin
    DragQueryFile(Message.wParam, i, p, 255);
  End;
  Try
    If FileExists(strPas(p)) Then
      OpenFile(strPas(p));
  Finally
    DragFinish(HDROP(Message.WParam));
  End;
End;
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