3rdpartylibs/fastreports.wpf/FastReport.Forms.WPF/Controls/Control.OwnerDrawControl.cs

using System.Windows.Media;

namespace System.Windows.Forms
{
    public partial class Control
    {
        private class OwnerDrawControl : System.Windows.Controls.Control
        {
            private Control owner;

            protected override void OnRender(DrawingContext drawingContext) => owner.DoPaint(drawingContext);

            public OwnerDrawControl(Control owner) => this.owner = owner;
        }

    }
}