C#

static void Main(string[] args)
{
    double d = 0d;

    d += 0.0963d;
    d += 0.0029d;
    d += 0.0654d;
    d += 0.0386d;
    d += 0.0526d;
}

protected virtual void mnuRptClicked(object sender, EventArgs e)
{
    this.AutoScrollPosition = new Point(0, 0);
    // get dimensions
    int w = 0,h = 0;
    foreach(Control c in this.Controls )
    {
        if(c.Left + c.Width > w) w = c.Left + c.Width + 100;
        if(c.Top  + c.Height  > h) h = c.Top  + c.Height + 100;
    }
    if(w == 0) w = this.DisplayRectangle.Width;
    if(h == 0) h = this.DisplayRectangle.Height;
    // create bitmap
    Bitmap b = new Bitmap(w,h);
    Graphics bg = Graphics.FromImage(b);
    // copy screen to bitmap
    // TODO: invisible part of screen turns out black
    int bgHdc = (int)bg.GetHdc();
    SendMessage(this.Handle , WM_PAINT, bgHdc, 0);
    SendMessage(this.Handle, WM_PRINT, bgHdc, (int)(
                DrawingOptions.PRF_OWNED |
                DrawingOptions.PRF_CHILDREN |
                DrawingOptions.PRF_CLIENT)
                );
    bg.ReleaseHdc();
    bg.Dispose ();
    // save the result as captured.jpeg
    b.Save(Application.StartupPath + @"\captured.jpg", ImageFormat.Jpeg);
    b.Dispose ();
}