using System.Windows; using System.Windows.Controls.Primitives; namespace MaterialDesignThemes.Wpf { public static class ToolTipAssist { public static CustomPopupPlacementCallback CustomPopupPlacementCallback => CustomPopupPlacementCallbackImpl; public static CustomPopupPlacement[] CustomPopupPlacementCallbackImpl(Size popupSize, Size targetSize, Point offset) { return new [] { new CustomPopupPlacement(new Point(targetSize.Width/2 - popupSize.Width/2, targetSize.Height + 14), PopupPrimaryAxis.Horizontal) }; } } }