BooleanConverter

Hi,

I have a property with a custom BooleanConverter to display custom strings instead of "true" and 'false"

Here is the property:

[TypeConverter(typeof(UnitConverter))]
public bool unit
{
    get { return m_millimeterUnit; }
    set { m_millimeterUnit = value; }
}

And the converter:

 [ComVisible(false)]
    public class UnitConverter : BooleanConverter
    {
        public override object ConvertTo(ITypeDescriptorContext x_context, CultureInfo x_culture, object x_value, Type x_destinationType)
        {
            object l_ret;
            if ((typeof(string) == x_destinationType) && (x_value != null))
            {
                bool l_millimeterUnit = (bool)x_value;
                l_ret = l_millimeterUnit ? "mm":"Inches");
            }
            else
            {
                l_ret = base.ConvertTo(x_context, x_culture, x_value, x_destinationType);
            }
            return l_ret;
        }

        public override bool CanConvertTo(ITypeDescriptorContext x_context, Type x_destinationType)
        {
            return (typeof(string) == x_destinationType) || base.CanConvertTo(x_context, x_destinationType);
        }

        public override object ConvertFrom(ITypeDescriptorContext x_context, CultureInfo x_culture, object x_value)
        {
            object l_ret;
            string l_value = x_value as string;
            if (l_value != null)
            {
                l_ret = (l_value !=  "Inches");
            }
            else
            {
                l_ret = base.ConvertFrom(x_context, x_culture, x_value);
            }
            return l_ret;
        }
    }

 The problem is that the standard propertygrid is working as expected, but not the Actipro's propertygrid which shows a checkbox instead.

How can I customize this checkbox and get a combobox with my 2 strings ("inches" and "mm") ?

Best regards,