/// <summary>
/// Gets the character index of a Point
/// </summary>
public int GetCharIndexFromPos(System.Windows.Point pos)
{
TextPointer p = txc.GetPositionFromPoint(pos, true);
if (p != null)
{
return(ConvertSymbolOffsetToPlain(txc.Document.ContentStart.GetOffsetToPosition(p)));
}
else
{
return(-1);
}
}