How to get the width of a fixed-width font, at a specified font size? [Figured it out myself, eventually]

public enum Unit : int
{
    Pixels = 0,
    Inches = 100,           // 1 inch
    Centimeters = 254,      // 2.54 cm
    Millimeters = 2540,     // 25.4 mm
    Points = 7200,          // 72 points
    HalfPoints = 14400,     // used in rtf
    QuarterPoints = 28800,  // used in rtf
    DocumentUnits = 30000,  // 300 document units
    Twips = 144000,         // used in rtf (20 twips = 1 point)
}

public static float GetCharWidth(string MonospacedFontName, 
    float RequestedFontSizeInPoints, Unit CharWidthUnit)
{
    int PointsPerInch = 72;
    int UnitFactor = 100;
    Bitmap B = new Bitmap(16, 16);  // Whatever, we only need a Graphics
    Graphics G = Graphics.FromImage(B);
    float PixelsPerInch = G.DpiX;

    // Why are we doing this?
    // Well, when we want to create a font with a certain size, 
    // the system finds the closest possible value.
    // That's why in the Visual Studio designer, for example, 
    // if you set Font.Size = 10, it actually becomes 9.75
    float GeneratedFontSizeInPoints = (int)(RequestedFontSizeInPoints * 
        PixelsPerInch) / PointsPerInch * PointsPerInch / PixelsPerInch;

    Font F = new Font(MonospacedFontName, GeneratedFontSizeInPoints, 
        FontStyle.Regular, GraphicsUnit.Point);
    // NoPadding is mandatory
    int WidthInPixels = TextRenderer.MeasureText(G, " ", F, 
        Size.Empty, TextFormatFlags.NoPadding).Width;
    F.Dispose();
    G.Dispose();
    B.Dispose();  // Clean up everything...

    // And finally, convert to the desired unit
    return (CharWidthUnit == Unit.Pixels) ? WidthInPixels : 
        WidthInPixels / PixelsPerInch * (int)CharWidthUnit / UnitFactor;
}