Radscheduler CustomRessourceElement ChildElement to small

Hello Support-Team,

I'm using a RadScheduler with a custom ElementProvider. I need some Help with the Elements. I wanted the name element on top and a info box right below using the rest of the free space. I made a screenshot and here is my code for the CustomElements:

class CustomSchedulerResourceHeaderCellElement : SchedulerResourceHeaderCellElement
{

        private readonly StackLayoutElement _container = new StackLayoutElement();
        private readonly StackLayoutElement _subContainer = new StackLayoutElement();
        private readonly LightVisualElement _nameElement = new LightVisualElement();
        private readonly LightVisualElement _infoElement = new LightVisualElement();

        protected override void CreateChildElements()
        {
            base.CreateChildElements();

            _container.StretchHorizontally = true;
            _container.StretchVertically = true;
            _container.Orientation = Orientation.Vertical;
            _container.Alignment = ContentAlignment.TopCenter;
            _container.Padding = new Padding(3);
            _container.Children.Add(_nameElement);

            _nameElement.StretchHorizontally = true;
            _nameElement.DrawImage = true;
            _nameElement.ImageLayout = ImageLayout.None;
            _nameElement.TextWrap = true;
            _nameElement.TextAlignment = ContentAlignment.TopLeft;
            _nameElement.ImageAlignment = ContentAlignment.TopLeft;
            _nameElement.TextImageRelation = TextImageRelation.ImageBeforeText;

            _container.Children.Add(_subContainer);
            _subContainer.StretchHorizontally = true;
            _subContainer.StretchVertically = true;
            _subContainer.Orientation = Orientation.Vertical;
            _subContainer.Alignment = ContentAlignment.TopCenter;
            _subContainer.Children.Add(_infoElement);

            _infoElement.StretchHorizontally = true;
            _infoElement.StretchVertically = true;
            _infoElement.TextWrap = true;
            _infoElement.TextAlignment = ContentAlignment.TopLeft;

            _infoElement.BackColor = Color.FromArgb(128, Color.LightGray);
            _infoElement.NumberOfColors = 1;
            _infoElement.DrawFill = true;
            _infoElement.Font = new Font(this.Font, FontStyle.Regular);

            this.Children.Add(_container);
            this.DrawImage = false;
            this.DrawText = false;
        }

        public override string Text
        {
            get
            {
                InitElements();
                return base.Text;
            }
            set
            {
                base.Text = value;
            }
        }

/* Some more methods for setting the text elements and the image*/
}

I started with only one container, but adding a subcontainer didn't do the trick. Hope you can provide me a solution.

Regards,

Stephan