BCGControlBar Pro for MFC
void CBCGPGridCtrl::SetScale ( double  dblScale,
BOOL  bNotifyParent = FALSE,
CPoint  ptCenter = CPoint(0, 0) 
)

Specifies control font scale.

Parameters
dblScaleThe font scale (1.0 - original font).
bNotifyParentSpecifies whether parent of this control should be notified about scale changing.
ptCenterScaling center point (used in case of mouse wheel or gesture zoom events).