function GetLineBackColorPtr(aRow : Integer): pointer;
Returns a pointer to the first element of the background colors array.
Each element in the background colors array is of type TColor.
This method is not limited to the current scrolling region; it applies to the whole screen. Thus, the pointer that is returned points to the data for column 1 of the required row.
See also: BackColor, DefBackColor, GetLineForeColorPtr