public override void OnMouseDown(CanvasPanel canvasPanel, MouseEventArgs e)
{
if (e.Button == MouseButtons.Left)
{
SelectedShape = GetClickedShape(canvasPanel, e);
if (this.SelectedShape != null)
{
canvasPanel.Cursor = Cursors.SizeAll;
_dragInfo = new DragInfo(e, SelectedShape.GetHandlerAt(e.Location));
}
}
canvasPanel.Refresh();
}
