BCGControlBar Pro for MFC
void CBCGPEditCtrl::SetTextLeftMargin ( int  nTextLeftMargin = 1,
BOOL  bRedraw = TRUE 
)

Specifies a distance between text and left-side bar. By default, this value is 1.

Parameters
nTextLeftMarginThe text left margin.
bRedrawSpecifies whether the edit control should be redrawn.