BCGControlBar Pro for MFC
void CBCGPEditCtrl::LineScroll ( int  nLines,
int  nChars = 0 

Scrolls the text of an edit control.

Call this function to scroll the text of an edit control.

The edit control does not scroll vertically past the last line of text in the edit control.

LineScroll can be used to scroll horizontally past the last character of any line.

nLinesSpecifies the number of lines to scroll vertically.
nCharsSpecifies the number of character positions to scroll horizontally.