Forums | NoesisGUI

<ResourceDictionary>
  <BoolConverter x:Key="BoolConverter"/>
</ResourceDictionary>

<StackPanel>
  <RadioButton IsChecked="{Binding CameraSpeedRatio,Converter={StaticResource BoolConverter},ConverterParameter=1,Mode=TwoWay}"/>
  <RadioButton IsChecked="{Binding CameraSpeedRatio,Converter={StaticResource BoolConverter},ConverterParameter=1.5,Mode=TwoWay}"/>
  <RadioButton IsChecked="{Binding CameraSpeedRatio,Converter={StaticResource BoolConverter},ConverterParameter=2,Mode=TwoWay}"/>
  <RadioButton IsChecked="{Binding CameraSpeedRatio,Converter={StaticResource BoolConverter},ConverterParameter=3,Mode=TwoWay}"/>
</StackPanel>

static const Noesis::DependencyProperty* CameraSpeedRatio_;

data->RegisterProperty<double>(CameraSpeedRatio_, "CameraSpeedRatio",
  Noesis::FrameworkPropertyMetadata::Create(1, Noesis::FrameworkPropertyMetadataOptions_None));

class EnumToBoolConverter : public BaseValueConverter
{
public:
  bool TryConvert(BaseComponent* value, const Type* targetType, BaseComponent* parameter,
    Noesis::Ptr<BaseComponent>& result)
  { return value->Equals(parameter); }

  bool TryConvertBack(BaseComponent* value, const Type* targetType, BaseComponent* parameter,
    Noesis::Ptr<BaseComponent>& result)
  {
    if (Boxing::CanUnbox<bool>(value) && Boxing::Unbox<bool>(value) == true)
    { result = *parameter; return true; }
    return false;
  }

private:
  NS_IMPLEMENT_INLINE_REFLECTION_(BoolConverter, BaseValueConverter, "BoolConverter")
};

bool TryConvert(BaseComponent* value, const Type* targetType, BaseComponent* parameter, Ptr<BaseComponent>& result)
{
    float v1 = Boxing::Unbox<float>(value);
    float v2 = StringToFloat(Boxing::Unbox<String>(parameter));
    result = Boxing::Box(v1 == v2);
    return true;
}

bool TryConvertBack(BaseComponent* value, const Type* targetType, BaseComponent* parameter, Ptr<BaseComponent>& result)
{
    bool isParamValue = Boxing::Unbox<bool>(value);
    float v1 = 0.0f; // some default value
    float v2 = StringToFloat(Boxing::Unbox<String>(parameter));
    result = Boxing::Box(isParamValue ? v2 : v1));
    return true;
}

    public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
    {
        return value?.Equals(parameter);
    }

    public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
    {
        return value?.Equals(true) == true ? parameter : Binding.DoNothing;
    }