Kortstokk

class Card : Button
{
    static String BACKSIDE="b2fv";
    String m_ResID;
    int m_CID;
    Boolean m_FrontIsUp;
    Point m_hitPoint = new Point(0, 0);
    static String[] m_Suites = { "Kløver", "Spar", "Hjerter", "Ruter" };
    static String[] m_Rank = { "Ess", "Konge", "Dame", "Knekt",
                        "10","9","8","7","6","5","4","3","2" };
    public Card(int id)
    {
        m_CID = id;
        m_ResID="_" + (id + 1);
        m_FrontIsUp = false;
    }
    public void ShowFace(Boolean front)
    {
        m_FrontIsUp = front;
        if (m_FrontIsUp)
            Image = (Image)Properties.Resources.ResourceManager.GetObject(m_ResID);
        else
            Image = (Image)Properties.Resources.ResourceManager.GetObject(BACKSIDE);
        
    }
    public Boolean FaceUp
    { get { return m_FrontIsUp; } }
    public Point HitPoint
    {
        get{return m_hitPoint;}
        set{m_hitPoint=value;}
    }
    public String Suite
    { get { return m_Suites[m_CID % 4]; } }
    
    public String Rank
    { get { return m_Rank[m_CID / 4]; } }
}

private void setUpCardButtons()
{           
    for (int ix = 0; ix < 52; ix++)
    {
        Card b = new Card(ix);
        b.Location = new Point(5, 5);
        b.Name = "Card"+(ix+1);
        b.Size = new Size(72, 96);
        b.TabIndex = ix+1;
        b.UseVisualStyleBackColor = true;
        b.Visible = true;
        b.Parent = splitContainer1.Panel2;
        b.MouseDown += new System.Windows.Forms.MouseEventHandler(this.card_press);
        b.MouseUp += new System.Windows.Forms.MouseEventHandler(this.card_up);
        b.MouseMove += new System.Windows.Forms.MouseEventHandler(this.card_move);
        b.ShowFace(false);
        cardDeck.Add(b);
    }
}

private void buttonDeal_Click(object sender, EventArgs e)
    {
        Random r = new Random(DateTime.Now.Millisecond);
        foreach (Button b in cardDeck)
        {
            int left = r.Next(0, b.Parent.Width - b.Width-2);
            int top = r.Next(0, b.Parent.Height - b.Height-2);                
            b.Location = new Point(left, top);
        }
    }
    private void card_press(object sender, MouseEventArgs e)
    {
        if (e.Button == MouseButtons.Left)
        {
            movingButton = (Button)sender;
            movingButton.Capture = true;
            movingButton.BringToFront();                
            ((Card)sender).HitPoint=new Point(e.X,e.Y);
            this.Cursor = Cursors.Hand;
        }
    }
    private void card_up(object sender, MouseEventArgs e)
    {
        if (e.Button == MouseButtons.Left)
        {
            ((Button)sender).Capture = false;
            movingButton = null;
            this.Cursor = Cursors.Default;
        }
        else
        {
            ((Card)sender).ShowFace(!((Card)sender).FaceUp);
            ((Card)sender).BringToFront();
            labelCard.Text = ((Card)sender).Suite + " " + ((Card)sender).Rank;
        }
    }
    private void card_move(object sender, MouseEventArgs e)
    {
        if (movingButton != null)
        {
            int left = movingButton.Location.X + e.X-((Card)movingButton).HitPoint.X;
            int top = movingButton.Location.Y + e.Y - ((Card)movingButton).HitPoint.Y;
            if (left > movingButton.Parent.Width - movingButton.Width)
                left = movingButton.Parent.Width - movingButton.Width - 2;
            if (left < 0)
                left = 2;
            if (top > movingButton.Parent.Height - movingButton.Height)
                top=movingButton.Parent.Height - movingButton.Height-2;
            if (top < 0)
                top = 2;
             movingButton.Location = new Point(left, top);
        }
    }
}