.NET Framework 4.8 improves support for hosted HWNDs and Windows Forms interoperation in High-DPI WPF applications on platforms that support Mixed-Mode DPI scaling (starting with Windows 10 April 2018 Update). When hosted HWNDs or Windows Forms controls are created as Mixed-Mode DPI-scaled windows by calling SetThreadDpiHostingBehavior and SetThreadDpiAwarenessContext, they can be hosted in a Per-Monitor V2 WPF application and are sized and scaled appropriately. Such hosted content is not rendered at the native DPI; instead, the operating system scales the hosted content to the appropriate size. The support for Per-Monitor v2 DPI awareness mode also allows WPF controls to be hosted (that is, parented) in a native window in a high-DPI application.