C#

typedef INT SomeTypeArray[128];
void SomeFunction(INT *lpSomeTypeArray);

public static class NativeMethods
{
    // void SomeFunction(INT *lpSomeTypeArray);
    [DllImport("some.dll", SetLastError = true)]
    public static extern void SomeFunction(
        SomeTypeArray lpSomeTypeArray);
}

[StructLayout(LayoutKind.Sequential)]
public struct SomeType
{
    private int value;

    private SomeType(int value)
    {
        this.value = value;
    }

    public static implicit operator SomeType(int value)
    {
        return new SomeType(value);
    }
    public static implicit operator int(SomeType someType)
    {
        return someType.value;
    }
}

// typedef INT SomeTypeArray[128];
[StructLayout(LayoutKind.Sequential)]
public struct SomeTypeArray
{
    private SomeType[] someTypes;

    public SomeTypeArray(params SomeType[] someTypes)
    {
        if (someTypes == null)
            this.someTypes = new SomeType[128];
        else if (someTypes.Length == 128)
            this.someTypes = someTypes;
        else
        {
            this.someTypes = new SomeType[128];
            int counter = 0;
            foreach (SomeType someType in someTypes)
            {
                this.someTypes[counter] = someType;
                counter++;
                if (counter == this.someTypes.Length)
                    break;
            }
        }
    }
}

FontStyle style = someFont.Style;
style |= FontStyle.Italic;

FontStyle style = someFont.Style;
style = FontStyle.Italic;