protected internal void CallEvent(PointEventArgs e, EventHandler <PointEventArgs> handler)
{
if (e != null && handler != null)
{
handler.Invoke(this, e);
}
}
protected internal void OnDrawn(PointEventArgs e)
{
CallEvent(e, Drawn);
}
static void DrawPoint(object sender, PointEventArgs e)
{
Console.SetCursorPosition(e.X, e.Y);
Console.WriteLine(e.Sym);
}