private void button_MouseDown(object sender, MouseEventArgs e)
{
Button button = (Button)sender;
Point location = (Point)button.Tag;
if (e.Button == MouseButtons.Left)
{
presenter.RevealSquare(location.X, location.Y);
}
else if (e.Button == MouseButtons.Right)
{
presenter.FlagSquare(location.X, location.Y);
}
}