@ioa747 is this correct for _GDIPlus_GraphicsSetSmoothingMode()
$GDIP_SMOOTHINGMODE_DEFAULT (0) - Smoothing is not applied.
$GDIP_SMOOTHINGMODE_HIGHSPEED (1) - Smoothing is not applied.
$GDIP_SMOOTHINGMODE_HIGHQUALITY (2) - Smoothing is applied using an 8 X 4 box filter (no antialiasing).
$GDIP_SMOOTHINGMODE_NONE (3) - Smoothing is not applied.
$GDIP_SMOOTHINGMODE_ANTIALIAS8X4 (4) - Smoothing is applied using an 8 X 4 box filter (alias $GDIP_SMOOTHINGMODE_ANTIALIAS).
$GDIP_SMOOTHINGMODE_ANTIALIAS8X8 (5 ) - Smoothing is applied using an 8 X 8 box filter.