private void AddMarker(MouseEventArgs e)
        {
            PictureEditViewInfo viewInfo = control.GetViewInfo() as PictureEditViewInfo;

            if (!viewInfo.PictureScreenBounds.Contains(e.Location))
            {
                return;
            }
            rectangleMarkers.Add(new RectangleMarker(control, new Rectangle(e.X - 50, e.Y - 50, 100, 100)));
        }
        private void AddMarker(MouseEventArgs e)
        {
            PictureEditViewInfo viewInfo = pEdit.GetViewInfo() as PictureEditViewInfo;

            if (!viewInfo.PictureScreenBounds.Contains(e.Location))
            {
                return;
            }
            var marker = new RectangleMarker(pEdit, new Rectangle(e.X - 50, e.Y, 100, 100));

            rectangleMarkers.Add(marker);
        }