LabelPlus.PicView.getLabelIndex C# (CSharp) Method

        int getLabelIndex(int x, int y)
        {
            if (labels == null) return -1;

            float realX = startP.X*zoom +x;
            float realY = startP.Y*zoom +y;
            PointF realP = new PointF(realX,realY);

            RectangleF[] rectList = new RectangleF[labels.Count];
            for (int i=0;i<labels.Count;i++) {
                RectangleF tmpRect = getLabelRectangle(labels[i].X_percent, labels[i].Y_percent);
                if (tmpRect.Contains(realP))
                    return i;
            }
            return -1;
        }