Get monitor aspect ratio

Question

I want to get the aspect ratio of the monitor as two digits: width and height. For example, 4 and 3, 5 and 4, 16 and 9.

I wrote code for this task. Maybe this is an easier way to do this? For example, some library function = \

/// <summary>
/// Aspect ratio.
/// </summary>
public struct AspectRatio
{
    int _height;
    /// <summary>
    /// Height.
    /// </summary>
    public int Height
    {
        get
        {
            return _height;
        }
    }

    int _width;
    /// <summary>
    /// Width.
    /// </summary>
    public int Width
    {
        get
        {
            return _width;
        }
    }

    /// <summary>
    /// Ctor.
    /// </summary>
    /// <param name="height">Height of aspect ratio.</param>
    /// <param name="width">Width of aspect ratio.</param>
    public AspectRatio(int height, int width)
    {
        _height = height;
        _width = width;
    }
}



public sealed class Aux
{
    /// <summary>
    /// Get aspect ratio.
    /// </summary>
    /// <returns>Aspect ratio.</returns>
    public static AspectRatio GetAspectRatio()
    {
        int deskHeight = Screen.PrimaryScreen.Bounds.Height;
        int deskWidth = Screen.PrimaryScreen.Bounds.Width;

        int gcd = GCD(deskWidth, deskHeight);

        return new AspectRatio(deskHeight / gcd, deskWidth / gcd);
    }

    /// <summary>
    /// Greatest Common Denominator (GCD). Euclidean algorithm. 
    /// </summary>
    /// <param name="a">Width.</param>
    /// <param name="b">Height.</param>
    /// <returns>GCD.</returns>
    static int GCD(int a, int b)
    {
        return b == 0 ? a : GCD(b, a % b);
    }

}

Answer 1

• Use Screenclass to get height / width.
• Divide to get GCD
• Calculate the ratio.

See the following code:

private void button1_Click(object sender, EventArgs e)
{
    int nGCD = GetGreatestCommonDivisor(Screen.PrimaryScreen.Bounds.Height, Screen.PrimaryScreen.Bounds.Width);
    string str = string.Format("{0}:{1}", Screen.PrimaryScreen.Bounds.Height / nGCD, Screen.PrimaryScreen.Bounds.Width / nGCD);
    MessageBox.Show(str);
}

static int GetGreatestCommonDivisor(int a, int b)
{
    return b == 0 ? a : GetGreatestCommonDivisor(b, a % b);
}

Answer 2

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