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Define a border for TMemos

 

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The windows message EM_SETRECT allows to define a left and/ or right border in a TMemo field.
The following code sets the left border to 20 pixels:

var
  Rect : TRect;
begin
  SendMessage(Memo1.Handle, EM_GETRECT, 0, LongInt(@Rect));
  Rect.Left := 20;
  SendMessage(Memo1.Handle, EM_SETRECT, 0, LongInt(@Rect));
  Memo1.Refresh;
end;

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