func (o *dockIcon) AddOverlayFromImage(iconPath string, position cdtype.EmblemPosition) {
var cstr *C.gchar
if iconPath != "" {
cstr = (*C.gchar)(C.CString(iconPath))
defer C.free(unsafe.Pointer((*C.char)(cstr)))
}
// last arg was 'myApplet' to identify the overlays set by the Dbus plug-in (since the plug-in can't be deactivated, 'myApplet' is constant).
C.cairo_dock_add_overlay_from_image(o.Ptr, cstr, C.CairoOverlayPosition(position), C.gpointer(o.Ptr))
}
func (o *dockIcon) RemoveOverlayAtPosition(position cdtype.EmblemPosition) {
C.cairo_dock_remove_overlay_at_position(o.Ptr, C.CairoOverlayPosition(position), C.gpointer(o.Ptr))
}