public Font GetFont(Point p1, Point p2, float dpi)
{
    int y = -(p2.Y - p1.Y); //反転した y 軸の調整
    int x = p2.X - p1.X;
    int angle = (int)(Math.Atan2(y, x) * 180 / Math.PI);
        
    //角度の調整
    if (y < 0) angle = 360 + angle;

    LogFont lf = new LogFont();
    lf.Height = (int)(-EnteredSize * dpi / 96);
    lf.Escapement = angle * 10;
    lf.Orientation = lf.Escapement;
    lf.FaceName = Font.Name;

    return Font.FromLogFont(lf);
}

if (dlgContact.ShowDialog() == DialogResult.OK)
{
    //電子メールの送信
    EmailMessage msg = new EmailMessage();
    msg.To.Add(new Recipient(dlgContact.SelectedContact.Email1Address));
    msg.Subject = "Here is an image I created...";
    msg.BodyText = "...using Windows Mobile 5";
    msg.Attachments.Add(new Attachment(filename));

    using (OutlookSession outlook = new OutlookSession())
    {
        outlook.EmailAccounts[0].Send(msg);
    }

    MessageBox.Show("Send successful.");
}