static public void SetMarkerStyle(this ScintillaGateway document, int marker, SciMsg style, Color foreColor, Color backColor)
{
int mask = document.GetMarginMaskN(1);
document.MarkerDefine(marker, (int)style);
document.MarkerSetFore(marker, foreColor.ToColour());
document.MarkerSetBack(marker, backColor.ToColour());
document.SetMarginMaskN(1, (1 << marker) | mask);
}